ICOADS Web information page (Tuesday, 07-Jan-2014 23:56:47 UTC):

Shipboard Environmental (Data) Acquisition System (SEAS)

Comparisons of Release 2.5 input data with deck 874 Shipboard Environmental Acquisition System (SEAS) test data

Figures 1-3 and Examples 1-3 provide 2000-07 duplicate elimination (dupelim) results comparing Release 2.5 (R2.5) input data with a new test file (seas874_test_imma.dat) of deck 874 ship data covering 1991-2010 (435,546 reports). These results reflect "transient" duplicate (dup) matches (as explained below) between deck 874, and real-time (GTS) and delayed-mode ship receipts from these other decks:
  • 792 US Natl. Cntrs. for Environ. Pred. (NCEP) BUFR GTS: Ship Data
  • 926 International Maritime Meteorological (IMM) Data
  • 927 International Marine (US- or foreign-keyed ship data)
First, all deck 874 data from the previous version were removed from the R2.5 input mixture (i.e. containing all available dups) for the same period. There were no exact dups in the test file. Then the new SEAS data were merged with the residual R2.5 input data, and the resulting data mixture was processed through dupelim.

During dupelim processing, all reports are compared with all other reports within a circular buffer, such that a duplicate status (DUPS; ref. Appendix A) flag within each report may be reset (to a higher, but not lower, value) as a result of subsequent matches. "Transient" matches therefore refers to all matches that were made, and DUPS results that may be altered later during this processing. Furthermore, dup matches used for these results are limited to those considered to be of "certain" dup status (i.e. DUPS 8-13).

The most significant SEAS problems identified are that the translated data appear to erroneously contain hour and minutes instead of hour to hundredths, and Examples 1 indicates some possibly erroneous positive web bulb temperatures (i.e. in conjunction with negative dew point temperatures; these examples also reveal an possible GTS coding error in NCEP dew point temperatures of 99.0 spanning at least 2002-06). Also there were sea surface temperature indicator differences, wind directions off by 10 in Examples 2-3 and a slight wind speed bias. Some differences may be the result of quality control in the other decks, for example of clouds and in deck 792 calm and variable wind directions. There are more deck 874 wind speed indicators than wind speeds in Figure 1.

Dups involving call sign KRGB were quite dissimilar (see Examples 3 final no pattern example). Figures 1-2 include KRGB dups and may be unduly biased by that call sign, which also represented the most frequent of the overall SEAS data (2.32%). Figure 3 excludes KRGB dups.

ID (identification/call sign) KRGB included


Figure 1. For each primary data element (ref. IMMA documentation), stacked bars show agreement (blue) vs. disagreement (red) among transient duplicates (where missing vs. extant data counts as disagreement); and symbols indicate the total extant level of deck 792 (+) and deck 874 (x) data (thus any displacement between the symbol and the top of the bar represents missing data in one data source; note the total height of the bar extends only to the level at which the element is extant in one and/or the other source).

Introductory explanation of the Examples format: In the bullets preceding each group of IMMA report examples, we have highlighted noteworthy (and what appear to be systematic) patterns of field differences. The bulleted sentences are generally concluded with percentages (nn%), indicating the percentage of disagreement accounted for by a given data pattern, with respect to the total amount of element disagreement (i.e. red bar), as shown in the corresponding figure (here Figure 1). Read "/" as "or" for when multiple patterns or variants (and associated percentages) were identified. In the actual IMMA report examples that follow the bullets, the primary field abbreviations are listed vertically (ref. IMMA documentation), and the caret (^) appears below character positions that differ between two example reports. Report examples are not included below for IX or SD2 because they are outside the selected primary fields, and sometimes not specifically for "no pattern" report examples, although they may appear in other examples. Some patterns have been combined in a single example.

Examples 1. Transient matches between decks 792 vs. 874 (NCEP vs. SEAS).
  • DS (ship course) noteworthy differences: deck 792 DS = 1 and deck 874 DS = missing together with
  • VS (ship speed) noteworthy differences: deck 792 VS = 1 and deck 874 VS = missing (15%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    20071023   0 5760 22680 0  011   1WTEB       03624 26 98 22101762 15   790  63   40      887 62A             165 128  792
    20071023   0 5760 22680 0 00     1WTEB       03624 26 98 22101762 150  790  63   46      887 62A             165 128  874
                              ^ ^^                                      ^             ^                                   ^^^
    
  • II (ID indicator) noteworthy differences: deck 792 II = 2 - generic ID and deck 874 II = 1 - call sign (95%).
  • ID (identification) noteworthy differences: deck 792 ID = MASKSTID/KGJD/MAUMEE and deck 874 ID = any pattern/NRUO/WDA4649 (43%)/(31%)/(11%).
    Note: All NCEP ship reports (deck 792) are being uniformly remasked by NCEP to "MASKSTID" since December 2007 owing to ship commercial and security concerns.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200712251000 4350 27230 0  042   2MASKSTID   02304 62 95 22101964     -65                886 4AA     1       165 169  792
    200712251000 4350 27230 0 0042   1WZE4928    02304 62 95 22101964   0 -65                886 4AA             165 169  874
                              ^      ^^^^^^^^^                          ^                                ^                ^^^
    2001 423   0 2530 20580 0  013   1KGJD       0 804 77 98 21102308 10  244       130 1 227522 472   3 310 4 4 165 234  792
    2001 423   0 2530 20580 0 0013   1NRUO       0 804 77 98 21102308 103 244       130 1 227522 472   3 310 4 4 165 234  874
                              ^       ^^^^                              ^                                                 ^^^
    2006 5312000 4550 27690 0  033   1MAUMEE     02704 62 97   10186      111           1  788   A     0 1       165 169  792
    2006 5312000 4550 27690 0 0033   1WDA4649    02704 62 97   10186    0 111           1  788 A AAA   0 1       165 169  874
                              ^       ^^^^^^^                           ^                      ^  ^^                      ^^^
    
  • D (wind direction) noteworthy differences: deck 792 D = 362 - variable/361 - calm and deck 874 D = 361 - calm/362 - variable (35%)/(13%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200111 41500 4140 29000 0  022   1KNBD       03624 77 97 20101938  3  1190  98   80 1 1161 0 905   2 1       165 170  792
    200111 41500 4140 29000 0 0022   1KNBD       03614 77 97 20101938  30 1190  98   80 3 116100 905   2 1       165 170  874
                              ^                     ^                   ^               ^     ^                           ^^^
    200710241800 1450 25510 0  052   1WTEJ       03614  0 97 22101230  2  2720 240  230 1 282552 669   0 031 8 2 165 275  792
    200710241800 1450 25510 0 0052   1WTEJ       03624  0 97 22101230  20 2720 240  227 1 282552 669   0 031 8 2 165 275  874
                              ^                     ^                   ^            ^^                                   ^^^
    
  • W (wind speed) noteworthy differences: deck 874 W = deck 792 W - 0.1 (92%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2000 6181200 5410 20010 0  063   1LAOT4      01504129 97616100007 50   700  60   50 1  80877 42A   8 715 8 8 165 126  792
    2000 6181200 5410 20010 0 0063   1LAOT4      01504128 97616100007 503  700  60   50 3  80877 42A   8 715 8 8 165 126  874
                              ^                         ^               ^               ^                                 ^^^
    
  • WW (present weather) noteworthy differences: alternate being missing.
  • W1 (past weather) noteworthy differences: alternate being missing.
  • A (barometric tendency) noteworthy differences: alternate being missing.
  • PPP (barometric tendency) noteworthy differences: alternate being missing.
  • W2 (second past weather) noteworthy differences: alternate being missing.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2005 121 600 5100 21390 0  024   1KRGB       0 804185 95586 97157 35   710  78   80 1  509 A AAA             165 127  792
    2005 121 600 5100 21390 0 0024   1KRGB       0 804185       9715    0  71                  A AAA             165 127  874
                              ^                           ^^^^^     ^ ^^^    ^  ^^   ^^ ^  ^^^                            ^^^
    2006 5 9 900 4760 27150 0  023   1WDC6055    01804 41 98   10061      100           1  17    A       1       165 169  792
    2006 5 9 900 4760 27150 0 0023   1WDC6055    01804 41 9821510061    0 100           1  17  A AAA             165 169  874
                              ^                             ^^^         ^                      ^  ^^     ^                ^^^ 
    2002 6 51300 5750 22520 0  011   1WCY2920    01804 26 98   10135       78                886 4AA     1       165 128  792
    2002 6 51300 5750 22520 0 00     1WCY2920    01804 26 98   101354   0  78                886 4AA             165 128  874
                              ^ ^^                                  ^   ^                                ^                ^^^
    
  • WBT (wet-bulb temperature) noteworthy differences: deck 874 WBT not negative (25%) [note deck 792 DPT = 99.0].
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2002 5121700 5290 20450 0  075   1WRYW       02704 26 98 22102304  0   670 -33  990 1  56742 46A   2 132 6 3 165 126  792
    2002 5121700 5290 20450 0 0075   1WRYW       02704 26 98 22102304  00  670  33  -15 1  56742 46A   2 132 6 3 165 126  874
                              ^                                         ^      ^    ^^^                                   ^^^
    2003 410 900 4950 35550 0  024   1WGXO       0 503 67 98 16101164  0   780 -33  990 1  97221 470   3 3 6 5 5 165 177  792
    2003 410 900 4950 35550 0 0024   1WGXO       0 503 67 98 16101164  00  780  33  -34 1  97221 470   3 3 6 5 5 165 177  874
                              ^                                         ^      ^    ^^^                                   ^^^ 
    2004 121   0 3910 15500 0  014   1KDBG       03304139 97  1101191 15   560 -30  990      665 5AA   4 5   8 9 165 193  792
    2004 121   0 3910 15500 0 0014   1KDBG       03304139 97  1101191 150  560  30   -5      665 5AA   4 5   8 9 165 193  874
                              ^                                         ^      ^    ^^^                                   ^^^
    2005 4 61200 4730 20660 0  025   1WFLH       02403 77 98 22100507 20   560 -28  990 1  61888 6AA   3 230 8 9 165 162  792
    2005 4 61200 4730 20660 0 0025   1WFLH       02403 77 98 22100507 200  560  28  -11 1  61888 6AA   3 230 8 9 165 162  874
                              ^                                         ^      ^    ^^^                                   ^^^ 
    2006 2 8 300 3970 28770 0  053   1WMVF       03503103 95  0101502 20   511 -28  990 1  874 A AAA   6 226 5 3 165 206  792
    2006 2 8 300 3970 28770 0 0053   1WMVF       03503103     0101502 200  511  28   -3 3  8740A AAA   6 226 5 3 165 206  874
                              ^                           ^^            ^      ^    ^^^ ^     ^                           ^^^
    2006 2282200 4990 22460 0  034   1KGTX       02404 26 98 32 99502 10   610 -28  990 1  62652 47A      29 8 7 165 164  792
    2006 2282200 4990 22460 0 0034   1KGTX       02404 26 98 32 99502 100  610  28  -20 1  62652 47A      29 8 7 165 164  874
                              ^                                         ^      ^    ^^                                    ^^^ 
    2002 119 600 5520 22100 0  073   1KGTX       02703154 97 22101407 11   390 -22 -230 1  51886 47A   3 527 5 7 165 128  792
    2002 119 600 5520 22100 0 0073   1KGTX       02703154 97 22101407 110  390  22   -1 1  51886 47A   3 527 5 7 165 128  874
                              ^                                         ^      ^   ^^^^                                   ^^^
    2005 223   0 4240 30870 0  064   1WGLA       0 803 98 98 22101607 38   110  -6  -40 1  83553 63A   4 429 4 5 165 172  792
    2005 223   0 4240 30870 0 0064   1WGLA       0 803 98 98 22101607 380  110   6   -1 1  83553 63A   4 429 4 5 165 172  874
                              ^                                         ^       ^   ^^^                                   ^^^ 
    
  • DPT (dew-point temperature) noteworthy differences: deck 792 DPT in whole degrees (71%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2002 6131800 5820 22540 0  024   1WCY2920    03004 93 99 20102757  3  1390 106   80      4 A 9A6             165 128  792
    2002 6131800 5820 22540 0 0024   1WCY2920    03004 92 99 20102757  30 1390 106   77      40A 9A6             165 128  874
                              ^                         ^               ^            ^^       ^                           ^^^
    2002 6152300 2590 28460 0  035   1WJBJ       02103 87 97  6101402 20  2670 250  240 1 278756 43A             165 242  792
    2002 6152300 2590 28460 0 0035   1WJBJ       02103 87 97  6101402 200 2670 250  244 1 278756 43A             165 242  874
                              ^                                         ^             ^                                   ^^^ 
    
  • SI (SST method indicator) noteworthy differences: deck 792 SI = 1 - condenser inlet and deck 874 SI = 3 - hull contact sensor (97%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    20041023 900 3370 24180 0  021   1ELZT3      03604 62      10163      150           1 187    A               165 202  792
    20041023 900 3370 24180 0 0011   1ELZT3      03604 62      10163    0 150           3 187  A AAA             165 202  874
                              ^ ^                                       ^               ^      ^  ^^                      ^^^
    
  • N (total cloud amount) noteworthy differences: deck 792 N = missing/8 oktas and deck 874 N = 9 - sky obscured/missing (34%)/(20%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2001 6281500 4720 27350 0  000   1WYP8657    0 204 46 9145410225       70                          2 1       165 169  792
    2001 6281500 4720 27350 0 0000   1WYP8657    0 204 46 9145410225    0  70                9 A AAA   2 1       165 169  874
                              ^                                         ^                    ^ ^ ^^^                      ^^^
    2005 1 81800 2060 12160 0  065   1KRGB       0 304144 98636101754  0  2040 211  210 1 230887 AAA             165 226  792
    2005 1 81800 2060 12160 0 0065   1KRGB       0 304144      10175    0 204                  A AAA             165 226  874
                              ^                           ^^^^^     ^  ^^    ^ ^^^  ^^^ ^ ^^^^^^                          ^^^
    
  • NH (lower cloud amount) noteworthy differences: deck 792 NH = missing when no lower clouds (84%).
  • H (cloud height) noteworthy differences: deck 792 H = missing and deck 874 H = A - not known/9 - no clouds (42%)/(15%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2002 3121200 6110 20910 0  0     1WMH8       03303 36 99    9990       28                0 0  00             165  90  792
    2002 3121200 6110 20910 0 00     1WMH8       03303 36 99    9990    0  28                000 900             165  90  874
                              ^                                         ^                     ^  ^                        ^^^
    2001 8 31800 4130 14950 0  053   1C6QD3      01604 77 97 22101557 20  1750 165  160      8 A  AA             165 156  792
    2001 8 31800 4130 14950 0 0053   1C6QD3      01604 77 97 22101557 203 1750 165  160      88A AAA             165 156  874
                              ^                                         ^                     ^  ^                        ^^^
    2002 7 72300 5490 19470 0  082   1WBO3345    01803 21 92454101702 20   90                9 A AAA   0 030 5 4 165 125  792
    2002 7 72300 5490 19470 0 0082   1WBO3345    01803 21 92454101702 200  90                99A AAA   0 030 5 4 165 125  874
                              ^                                         ^                     ^                           ^^^ 
    
  • CL (low cloud type) noteworthy differences: deck 792 CL = missing and deck 874 CL = A - not visible (98%).
  • CM (middle cloud type) noteworthy differences: deck 792 CM = missing and deck 874 CM = A - not visible (99%).
  • CH (high cloud type) noteworthy differences: deck 792 CH = missing and deck 874 CH = A - not visible (99%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    20071114 300 4570 27540 0  000   1WE3592     02303154 98  2100176                   1 110    A     2 2       165 169  792
    20071114 300 4570 27540 0 0000   1WE3592     02303154 98  2100176   0               1 110  A AAA   2 2       165 169  874
                              ^                                         ^                      ^  ^^                      ^^^
    
  • WH (wave height) noteworthy differences: deck 792 WH not= missing (97%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2005 427 900 4730 27060 0  053   1WE4879     03003 51 98712 9991       10           1  308   A       1       165 169  792
    2005 427 900 4730 27060 0 0053   1WE4879     03003 51 98712 9991    0  10           1  308 A AAA             165 169  874
                              ^                                         ^                      ^  ^^     ^                ^^^
    
  • SD (swell direction) noteworthy differences: deck 792 SD = missing and deck 874 SD = 38 - indeterminate (32%).
  • SD2 (2nd swell direction) noteworthy differences: deck 792 SD2 = missing and deck 874 SD2 = 38 - indeterminate (63%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2000 8 41200 4920 16160 0  055   1OZFC2      0 204 41 97 22101521 19  1200 112  100 1 104886 3AA   3 1   4 2 165 158  792
    2000 8 41200 4920 16160 0 0055   1OZFC2      0 204 41 97 22101521 193 1200 112  100 1 104886 3AA   3 138 4 2 165 158  874
                              ^                                         ^                                 ^^              ^^^
    
  • IX (station/weather indicator) noteworthy differences: alternate being IX = 1 - manned included and IX = 3 - manned omitted (100%).
  • SLP (sea level pressure) noteworthy differences: no pattern.
  • AT (air temperature) noteworthy differences: no pattern.
  • SST (sea surface temperature) noteworthy differences: no pattern.
[NOTE: No duplicate examples included for this group for reasons as explained above]


Figure 2. As for Figure 1 except deck 926 (+) and deck 874 (x).

Examples 2. Transient matches between decks 926 vs. 874 (IMM vs. SEAS).
  • LAT (latitude) noteworthy differences: deck 874 LAT = deck 926 LAT +/- 0.1 (24%/56%).
  • LON (longitude) noteworthy differences: deck 874 LON = deck 926 LON +/- 0.1 (55%/14%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    20011128 600 3660 23670 0   22   1WTEJ     US0 304 21097 31102355  10 1140  940  70 3 13577204 0   3 235 6 2 165 201  926
    20011128 600 3650 23680 0 0022   1WTEJ       0 304 21 97 31102355  13 1140  94   70 3 135772 4AA   3 235 6 2 165 201  874
                   ^     ^    ^^               ^^        ^              ^         ^             ^ ^^                      ^^^
    
  • DS (ship course) noteworthy differences: deck 926 DS = 9 - unknown and deck 874 DS = missing (22%).
  • VS (ship speed) noteworthy differences: no pattern.
                             A                                               W    D                              A A         
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200011231200-1620 17460 0   9    1NRUO     US0 404 77098 20100607  50 3000 2721 264 1 2771110400   2 119 3 1 165 375  926
    200011231200-1620 17460 0 00     1NRUO       0 404 77 98 20100607  53 3000 272  260 1 277111 400   2 119 3 1 165 375  874
                              ^^^              ^^        ^              ^         ^   ^         ^                         ^^^
    
  • ID (identification) noteworthy differences: deck 926 ID = WSD707/KGJD and deck 874 ID = WSD7079/NRUO (34%)/(25%).
  • W (wind speed) noteworthy differences: deck 874 W = deck 926 W - 0.1 (48%).
  • DPT (dew-point temperature) noteworthy differences: deck 874/926 DPT in whole degrees (72%)/(13%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    20001117 600 2150 20140 0   41   1WSD707   US0 504129098 21102032 210 2440 2171 206 1 2612210500   4 3 7 8 4 165 234  926
    20001117 600 2150 20140 0 0041   1WSD7079    0 504128 98 21102032 213 2440 217  210 1 261221 500   4 3 7 8 4 165 234  874
                              ^^            ^  ^^       ^^              ^         ^  ^^         ^                         ^^^
    200012142100-4810 14660 0   9    1KGJD     US03204139097 32100707 400 1150 1051  97 1 1116510490   3 227 6 4 165 480  926
    200012142100-4810 14660 0 00     1NRUO       03204139 97 32100707 403 1150 105   90 1 111651 490   3 227 6 4 165 480  874
                              ^^^     ^^^^     ^^        ^              ^         ^   ^         ^                         ^^^
    
  • D (wind direction) noteworthy differences: deck 874 D = deck 926 D + 10 (42%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    20011224 600 3980 15830 0   23   1LAON4    US02904139098 32102104  00  600  400  20 1 1507630453   7 729 7 7 165 193  926
    20011224 600 3980 15830 0 0000   1LAON4      03004139 98 32102104  03  600  40   20 1 150763 453   7 729 7 7 165 193  874
                              ^^^^             ^^ ^^     ^              ^         ^             ^                         ^^^
    
  • WI (wind speed indicator) noteworthy differences: deck 926 WI = 4 - knot, measured and deck 874 WI = 3 - knot, estimated (81%).
  • IT (indicator for temperatures) noteworthy differences: deck 926 IT = 0 - tenths °C and deck 874 IT = 3 - °C mixed precision (85%).
  • SI (SST method indicator) noteworthy differences: deck 926 SI = 1 - condenser inlet and deck 874 SI = 3 - hull contact sensor (33%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2003 311 300 3360 28800 0   24   1WPVD     US0 604 82098 22101821 270 1560 1280 110 1 21777205 0   3 2 2 4 4 165 206  926
    2003 311 300 3360 28800 0 0024   1WPVD       0 603 82 98 22101821 273 1560 128  110 1 217772 5AA   3 2 2 4 4 165 206  874
                              ^^               ^^    ^   ^              ^         ^             ^ ^^                      ^^^
    2000 621 600 4850 18520 0   23   1C6CW9    US0 604 77098 22101407 100  800  701  61 1  8088705 0   5 318 6 5 165 160  926
    2000 621 600 4850 18520 0 0023   1C6CW9      0 604 77 98 22101407 103  800  70   60 3  80887 5AA   5 318 6 5 165 160  874
                              ^^               ^^        ^              ^         ^   ^ ^       ^ ^^                      ^^^
    
  • VV (visibility) noteworthy differences: no pattern.
  • WW (present weather) noteworthy differences: no pattern.
  • W1 (past weather) noteworthy differences: no pattern.
  • SLP (sea level pressure) noteworthy differences: no pattern.
  • A (barometric tendency) noteworthy differences: no pattern.
  • PPP (barometric tendency) noteworthy differences: no pattern.
  • AT (air temperature) noteworthy differences: no pattern.
  • WBT (wet-bulb temperature) noteworthy differences: no pattern.
  • SST (sea surface temperature) noteworthy differences: no pattern.
  • N (total cloud amount) noteworthy differences: deck 926 N = 8 oktas and deck 874 N = missing (28%).
  • NH (lower cloud amount) noteworthy differences: deck 926 NH = 0 oktas/8 oktas and deck 874 NH = missing (38%)/(29%).
  • CL (low cloud type) noteworthy differences: deck 926 CL = missing/0 - none and deck 874 CL = A - not visible (79%)/(09%).
  • CM (middle cloud type) noteworthy differences: deck 926 CM = missing/0 - none and deck 874 CM = A - not visible (91%)/(05%).
  • CH (high cloud type) noteworthy differences: deck 926 CH = missing/0 - none and deck 874 CH = A - not visible (32%)/(66%).
  • H (cloud height) noteworthy differences: deck 926 H = missing and deck 874 H = A - not known (57%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2005 2 3   0 2060 19730 0   65   1KRGB     US0 404103098 22100607 150 2560 2110 190 1 235882022    5 335 7 7 165 233  926
    2005 2 3   0 2060 19730 0 0065   1KRGB       0 804113      10072    0 235           3  86  A AAA             165 233  874
                              ^^               ^^  ^   ^ ^^^ ^^   ^^^ ^^   ^^^ ^^^^ ^^^ ^ ^^^^^^^^^^   ^ ^^^ ^ ^          ^^^
    2006 7 6 600 2800 26600 0   21   1WTDO     US01404 82096816101368  10 254     0 230      88 04     3 1       165 240  926
    2006 7 6 600 2800 26600 0 0021   1WTDO       01404 82 96816101368  13 254       230 1 2778 A 4AA   3 1       165 240  874
                              ^^               ^^        ^              ^         ^     ^ ^^^ ^^^ ^^                      ^^^  
    2000 616 900 5000 22990 0   33   1WXBZ     US03203 72098 0 103307 200 1150 1001  88      0000900   1 227 4 3 165 128  926
    2000 616 900 5000 22990 0 0033   1WXBZ       03203 72 98 0 103307 203 1150 100   90      0 A 9AA   1 227 4 3 165 128  874
                              ^^               ^^        ^              ^         ^  ^^       ^^^ ^^                      ^^^
    2000 229 600 2960 32960 0   23   1WMBK     US01203103098   102234  00 2000 1780 160 1 19444804 0   4 311 8 5 165 246  926
    2000 229 600 2960 32960 0 0023   1WMBK       01203103 98   102234  03 2000 178  160 1 194448 4AA   4 311 8 5 165 246  874
                              ^^               ^^        ^              ^         ^             ^ ^^                      ^^^
    2000 4261800 4760 18040 0   23   1C6CW9    US02604129093 22100554  01  600  501  39 1  609  0      4 414 9 6 165 160  926
    2000 4261800 4760 18040 0 0023   1C6CW9      02604128 93 22100554  03  600  50   40 3  609 A AAA   4 414 9 6 165 160  874
                              ^^               ^^       ^^              ^         ^  ^^ ^      ^^^^^                      ^^^
    
  • WP (wave period) noteworthy differences: deck 926 WP = missing and deck 874 WP = 0 sec (32%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2002 8291800 4300 21500 0   25   1WNDP     US01104  5098 10102662 110 1880 1500 130 1 1990000900     028     165 163  926
    2002 8291800 4300 21500 0 0025   1WNDP       01104 10 98 10102662 113 1880 150  130 1 1990 A 9AA   0 02810 4 165 163  874
                              ^^               ^^      ^^^              ^         ^           ^^^ ^^   ^    ^^ ^          ^^^
    
  • WH (wave height) noteworthy differences: no pattern.
  • SD (swell direction) noteworthy differences: no pattern.
  • SP (swell period) noteworthy differences: no pattern.
  • SH (swell height) noteworthy differences: no pattern.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2005 1301800 2710 21190 0   55   1KRGB     US02004 77098 20101882 280 217     0 210      342045    3 13012 8 165 235  926
    2005 1301800 2710 21190 0 0055   1KRGB       0 604108      10210    0 213                  A AAA             165 235  874
                              ^^               ^^ ^^  ^^^^^^ ^^  ^^^^ ^^    ^     ^ ^^^      ^^^^^^^   ^ ^^^^^ ^          ^^^
    
  • IX (station/weather indicator) noteworthy differences: deck 926 IX = 1 - manned included and deck 874 IX = 3 - manned omitted (22%).
[NOTE: No duplicate examples included for this group for reasons as explained above]

ID (identification/call sign) KRGB excluded (vs. included)



Figure 3. As for Figure 1 except deck 927 (+) and deck 874 (x).

Examples 3. Transient matches between decks 927 vs. 874 (keyed vs. SEAS).
  • LAT (latitude) noteworthy differences: deck 874 LAT = deck 927 LAT +/- 0.1 (46%/39%).
  • LON (longitude) noteworthy differences: deck 874 LON = deck 927 LON +/- 0.1 (44%/33%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2005 111   0 4600 32480 0 0014   1WPVD     US03004 98 98252101652 120 1000  83   60 1 153552 4AA             165 174  927
    2005 111   0 4610 32490 0 0014   1WPVD       03004 98 98252101652 120 1000  83   67 1 153662 3AA             165 174  874
                   ^     ^                     ^^                                     ^      ^^  ^                        ^^^
    
  • DS (ship course) noteworthy differences: no pattern.
  • VS (ship speed) noteworthy differences: no pattern.
  • ID (identification) noteworthy differences: deck 927 ID = C6CE7/WDA3673/WDB9135 and deck 874 ID = H9IM/WPVF/WQZ9670 (55%/27%/18%).
    Note: The final example does not appear to be a duplicate.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2001 715 600 5450 19330 0 0063   1C6CE7    US02204134 97 10100207 300 1300 120  110      885 5AA   4 323 4 4 165 125  927
    2001 715 600 5450 19330 0 0063   1H9IM       02204134 97 10100207 303 1300 120  110      885 5AA   4 323 4 4 165 125  874
                                      ^^^^^    ^^                       ^                                                 ^^^  
    2001 2 4 600 3720 28850 0 0024   1WDA3673  US03504 41 97 20102724  00  600  40   20 1 2347 A 5AA   6 235 8 4 165 206  927
    2001 2 4 600 3720 28850 0 0024   1WPVF       03504 41 97 20102724  03  600  40   20 1 2347 A 5AA   6 235 8 4 165 206  874
                                       ^^^^^^  ^^                       ^                                                 ^^^
    2006 515 600 4530 27440 0 00     1WDB9135  US0 504 41 98 2210149    0  80           1  20885 A00   2 2       165 169  927
    2006 515 600 4590 27460 0 00     1WQZ9670    03304 41                                      A AAA             165 169  874
                   ^     ^             ^^ ^^^  ^^ ^^      ^^ ^^^^^^^    ^  ^^           ^  ^^^^^  ^^   ^ ^                ^^^
    
  • D (wind direction) noteworthy differences: deck 874 D = deck 927 D + 10 (46%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2001 217   0 4910 20620 0 00     1C6OQ8    US02404 57 96125100101 100  45        50 3  90  A 1AA      1610 8 165 162  927
    2001 217   0 4910 20620 0 0023   1C6OQ8      02504 57 96125100101 103  450  45   50 3  90  A AAA   4 31610 8 165 162  874
                                ^^             ^^  ^                    ^    ^  ^^               ^     ^ ^                ^^^  
    
  • WI (wind speed indicator) noteworthy differences: deck 927 WI = 4 - knot, measured and deck 874 WI = 3 - knot, estimated (79%).
  • W (wind speed) noteworthy differences: no pattern.
  • VV (visibility) noteworthy differences: no pattern.
  • WW (present weather) noteworthy differences: no pattern.
  • W1 (past weather) noteworthy differences: no pattern.
  • SLP (sea level pressure) noteworthy differences: no pattern.
  • A (barometric tendency) noteworthy differences: no pattern.
  • PPP (barometric tendency) noteworthy differences: no pattern.
  • IT (indicator for temperatures) noteworthy differences: deck 927 IT = 0 - tenths °C and deck 874 IT = 3 - °C mixed precision (99%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2005 5211500 2700 27120 0 0062   1WTEO     US03204 62 97 32101212 110 2680 250  250 1 283552 500   2  28 3 2 165 241  927
    2005 5211500 2700 27120 0 0062   1WTEO       03203 62 97 32101212 113 2680 250  250 1 283552 500   2 128 3 2 165 241  874
                                               ^^    ^                  ^                                ^                ^^^
    
  • AT (air temperature) noteworthy differences: no pattern.
  • WBTI (WBT indicator) noteworthy differences: alternate being missing.
  • WBT (wet-bulb temperature) noteworthy differences: no pattern.
  • DPT (dew-point temperature) noteworthy differences: deck 927 DPT in whole degrees (69%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2006 9121800 3250 24200 0 0071   1WSD7079  US03204 62 98 22101462  30 1800 160  150 1 204555 400   3 126 6 2 165 202  927
    2006 9121800 3250 24200 0 0071   1WSD7079    03203 62 98 22101462  30 1800 160  148 1 204555 400   3 126 6 2 165 202  874
                                               ^^    ^                               ^^                                   ^^^
    
  • SI (SST method indicator) noteworthy differences: alternate being missing.
  • SST (sea surface temperature) noteworthy differences: no pattern.
  • N (total cloud amount) noteworthy differences: deck 927 N = 8 oktas (45%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2001 2161200-7730 16590 0 0082   1NRUO     US01703164 96464 98410 200 -47       -60      886 AAA      20 3 4 165 590  927
    2001 2161200-7730 16590 0 0082   1NRUO       01704164 96464 98410 203 -47       -60      786 AAA   2 220 3 4 165 590  874
                                               ^^    ^                  ^                    ^         ^ ^                ^^^
    
  • NH (lower cloud amount) noteworthy differences: deck 927 NH = 0 oktas/8 oktas and deck 874 NH = missing (34%)/(20%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2006 414 600 2950 27150 0 0043   1WTDO     US02604 26 97 0 10203    0 2100 200  200 1 20400A 9AA   3 1       165 241  927
    2006 414 600 2950 27150 0 0043   1WTDO       02604 26 97 0 10203    3 2100 200  200 1 2040 A 9AA   3 1       165 241  874
                                               ^^                       ^                     ^                           ^^^  
    2003 4 9 600 3720 29150 0 0024   1KRLZ     US0 604 36 98   101807 100 1750 155  140 1 226886 3AA   3   1 4 4 165 207  927
    2003 4 9 600 3720 29150 0 0024   1KRLZ       0 604 36      10180  100 1751 155  143 1 2268 6 3AA   3 3 1 4 4 165 207  874
                                               ^^         ^^        ^        ^        ^       ^          ^                ^^^
    
  • CL (low cloud type) noteworthy differences: deck 927 CL = 0 - none and deck 874 CL = A - not visible (31%).
  • CM (middle cloud type) noteworthy differences: deck 927 CM = 0 - none and deck 874 CM = A - not visible (55%).
  • CH (high cloud type) noteworthy differences: deck 927 CM = 0 - none and deck 874 CM = A - not visible (55%).
  • H (cloud height) noteworthy differences: no pattern.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2005 525   0 2670 26600 0 0082   1WTEO     US01404 31 98 10100887  80 2600 240  230 1 278000 900   1 121 4 1 165 240  927
    2005 525   0 2670 26600 0 0082   1WTEO       01404 31 98 10100887  83 2600 240  230 1 2780 A 9AA   1 121 4 1 165 240  874
                                               ^^                       ^                     ^^  ^^                      ^^^
    
  • WP (wave period) noteworthy differences: no pattern.
  • WH (wave height) noteworthy differences: deck 927 WH = missing (85%).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    2006 3271500 1860 27250 0 0051   1WTEO     US0 804 72 98 20101972 100 2500 225  210 1 268112 500   1   6 5 1 165 277  927
    2006 3271500 1860 27250 0 0051   1WTEO       0 804 72 98 20101972 103 2500 225  210 1 268112 500   1 1 6 5 1 165 277  874
                                               ^^                       ^                                ^                ^^^
    
  • SD (swell direction) noteworthy differences: no pattern.
  • SP (swell period) noteworthy differences: no pattern.
  • SH (swell height) noteworthy differences: no pattern.
  • IX (station/weather indicator) noteworthy differences: deck 927 IX = 3 - manned omitted and deck 874 IX = 1 - manned included (100%).
  • W2 (second past weather) noteworthy differences: no pattern.
[NOTE: No duplicate examples included for this group for reasons as explained above]


Appendix A - Duplicate Elimination Results

Certainty of transient matches was indicated by dup status (DUPS; ref. IMMA documentation) with the following values:
     0 unique
     1 best duplicate
     2 best duplicate with substitution
     3 uncertain: uncertain weather element with hour cross'
     4 uncertain: uncertain weather element with no cross'
     5 uncertain: uncertain weather element with day cross'
     6 uncertain: time/space'
     7 uncertain: certain weather element with hour cross'
     8 certain: certain weather element with no cross
     9 certain: uncertain weather element with time/space
    10 certain: certain weather element with time/space
    11 certain: time/space/id
    12 certain: uncertain weather element with time/space/id
    13 certain: certain weather element with time/space/id

Where "certain weather element" was contingent on how many of wind speed, visibility, present weather, first past weather, sea level pressure, air temperature, and sea surface temperature were in common, and how many were different. Allowances which would have permitted some differences to not count were deactivated, as were hour and day crosses. Almost all transient matches were DUPS 13, the most certain, and 71% of the DUPS 11 matches had ID of KRGB. Seven weather elements in common with zero different followed by four in common with zero different were the most frequent matching criteria (Fig. 4).



Figure 4. Total 2000-07 deck 874 transient matches a) [left] DUPS per deck and b) [right] weather elements in common and different (listed vertically).

Surprisingly the output SEAS data were 96% unique. Because only 22% were unique for hundredths of hour equal to zero and hundredths never exceeded 59 (Fig. 5), it appears that minutes were not translated. Curiously Examples 4 show SEAS data matching NCEP BUFR data in which the attached GTS raw strings did not have a minutes group.



Figure 5. Total 2000-07 deck 874 DUPS per hundredths of hour.

Examples 4. Hour patterns after sort by call sign.
                         A                                               W    D                              A A
                L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
   Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
   R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
2005 123 600 4160 15590 04 024   1A8DV4      03203149 95727100706 15    51   5    5 1 100887 7AA   910 11010 165 15715792
2005 123 556 4160 15590 030024   1A8DV4      03203149 95727100706 150   51   5    5 1 100887 7AA   910 11010 165 15715874
                                                                                                                         
2005 1231800 4160 16020 04 024   1A8DV4      03203190     2100406  5   100  10   10 1 10088A 74A   912341012 165 15810792
2005 1231751 4160 16020 030024   1A8DV4      03203190     2100406  53  100  10   10 1 10088A 74A   912341012 165 15810874
                                                                                                                         
2005 1231200 3630 34670 04 074   1HZZD       03203 26 98  1102036 57  1400 110   90 1 120436 742   4 032     165 21263792
2005 1231142 3630 34670 030074   1HZZD       03203 26 98  1102036 573 1400 110   80 1 120436 742   4 032     165 21263874
                                                                                                                         
2005 1232300 3660 34240 04 034   1HZZD       01603 26 98  2101926  9  1500 140  130 1 120547 742   3 016     165 21267792
2005 1232335 3660 34240 030034   1HZZD       01603 26 98  2101926  93 1500 140  130 1 120547 742   3 016     165 21267874

2005 1231300 2230 28920 04 034   1KCGH       02204 62 98 20101751 15  2390 183  150 1 239331 6AA   8 1 510 3 165 24220792
2005 1231300 2230 28920 030034   1KCGH     US02204 62 98 10101751 150 2390 183  150 1 239331 6AA   8   510 3 165 24220927
2005 1231327 2230 28920 030034   1KCGH       02204 62 98 20101751 150 2390 183  151 1 239331 6AA   8 1 510 3 165 24220874
                                                                                                                         
2005 123 600 5220 20790 04 024   1KGTY       02903 72 98 22 99202  4   280  17    0      881 42A   4 23012 3 165 12622792
2005 123 537 5220 20790 030024   1KGTY       02903 72 98 22 99202  40  280  17    1      881 42A   4 23012 3 165 12622874

2005 1231800 5130 21440 04 024   1KGTY       02403 87 98806 99621  3   500  44   30      664 46A   6 42612 4 165 12715792
2005 1231743 5130 21440 030024   1KGTY       02403 87 98806 99621  33  500  44   40      664 46A   6 42612 4 165 12715874
      
2005 123 600 4340 29550 04 054   1KHRK       0 704 67 98  2102007 30  -30           1  19889 37A   2 2 4 5 2 165 17134792
2005 123 536 4340 29550 030054   1KHRK       0 704 67 98  2102007 300 -30           1  19889 37A   2 2 4 5 2 165 17134874
                                                                                      
2005 1231500 4110 29320 04 054   1KHRK       01703 98 96256 98307 60                1  61669 278   4 427 5 7 165 17116792
2005 1231451 4110 29320 030054   1KHRK       01703 98 96256 98307 600               1  61669 278   4 427 5 7 165 17116874
                                                                                                                         
2005 1231800 4080 29230 04 064   1KHRK       02403159 97605 98007 30   80           1  58889 24A   4 522 6 9 165 171 7792
2005 1231750 4080 29230 030064   1KHRK       02403159 97605 98007 300  80           1  58889 24A   4 522 6 9 165 171 7874
                                                                                                                         
2005 1232100 4060 29140 04 063   1KHRK       03623268 93887 98503 50   20           1  69886 2AA   5 7 1 812 165 171 8792
2005 1232046 4060 29140 030063   1KHRK       03613267 93887 98503 500  20           1  69886 2AA   5 7 1 812 165 171 8874
                                                                                                                         
2005 123 600 4640 23410 04 022   1LAJV4      02003232 91414101302 25  1050 100  100 1 1209   A               165 16565792
2005 123 610 4640 23410 030022   1LAJV4      02003231 91414101302 253 1050 100  100 1 1209 A AAA             165 16565874
                                                                                                                         
2005 1231200 4630 23500 04 022   1LAJV4      01903144 91414101504  0   950  85   80 1 118    A               165 16565792
2005 1231137 4630 23500 030022   1LAJV4      01903144 91414101504  03  950  85   80 1 118  A AAA             165 16565874

[Documentation and Software][Links to additional]


U.S. National Oceanic and Atmospheric Administration hosts the icoads website privacy disclaimer
Document maintained by icoads@noaa.gov
Updated: Jan 7, 2014 23:56:47 UTC
http://icoads.noaa.gov/deck874.html