1) B10 10-degree box NEDN : input = Lat, Long (a): Convert Lat and Long to B10 by the uniform convention. 2) YR year NEDN : input = Year (bits 41-47) (a): Add 1900 to the input. 3) MO month NEDN : input = Month (bits 37-40) 4) DY day NEDN : input = Day (bits 32-36) 5) HR hour NEDN : input = Hour (bits 27-31) (a): Change the input from ones to hundredths. 6) TI time indicator NEDN : input = no corresponding field (a): If the input of Hour (above field) is not missing, set TI = 0 (nearest whole hour). 7) LON longitude NEDN : input = Long (word 1, bits 24-35) (a): Convert west (-0 to -180) and east (0 to 180) Long to LON. (b): Change the input from tenths to hundredths. 8) LAT latitude NEDN : input = Lat (word 1, bits 36-46) (a): Change the input from tenths to hundredths. 9) LI lat/lon indicator NEDN : input = no corresponding field (a): Set LI = 0 (degrees and tenths). 10) DCK deck NEDN : input = no corresponding field (a): Set DCK = 555 (Monterey Telecommunications). 11) SID source ID NEDN : input = no corresponding field (a): Set SID = 81 (US Navy FNMOC Monterey Telecom: NCAR: NEDN format). 12) PT platform type NEDN : input = no corresponding field 13) QI quality indicator NEDN : input = no corresponding field 14) DS dup status NEDN : input = no corresponding field 15) DC dup check NEDN : input = no corresponding field 16) TC track check NEDN : input = no corresponding field 17) PB pressure bias NEDN : input = no corresponding field 18) DI wind direction indicator NEDN : input = no corresponding field 19) D wind direction NEDN : input = DD (word 3 or 4, bits 24-30) (a): Multiply the input by five. (b): If the input equals 0, set D = 361 (calm). 20) WI wind speed indicator NEDN : input = no corresponding field 21) W wind speed NEDN : input = FF (word 3 or 4, bits 17-23) (a): Change the input from ones to tenths. 22) VI visibility indicator NEDN : input = no corresponding field 23) VV visibility NEDN : input = VV (word 4 or 5, bits 26-29) (a): Add 90 to the input. 24) WW present weather NEDN : input = WW (word 4 or 5, bits 30-36) 25) W1 past weather NEDN : input = W (word 3 or 4, bits 9-12) 26) W2 second past weather NEDN : input = no corresponding field 27) SLP sea level pressure NEDN : input = ppp (word 1 or 2, bits 3-13) (a): Add 900 to the input. 28) T1 temperature indicator NEDN : input = no corresponding field (a): Set T1 = 3 (whole degrees C or tenths (mixed precision among temperature fields)). 29) AT air temperature NEDN : input = TT (word 1 or 2, bits 0-2), (word 2 or 3, bits 40-47) 30) WBT wet bulb temperature NEDN : input = no corresponding field 31) DPT dew point temperature NEDN : input = Td (word 2 or 3, bits 23-29) (a): Change the input from ones to tenths. [Note: The format does not allow for negative values.] 32) SST sea surface temperature NEDN : input = Ts (word 2 or 3, bits 30-39) 33) SI sea surface temperature method indicator NEDN : input = no corresponding field 34) N total cloud amount NEDN : input = N (word 3 or 4, bits 13-16) 35) NH lower cloud amount NEDN : input = Nh (word 3 or 4, bits 5-8) 36) CL low cloud type NEDN : input = CL (word 3 or 4, bits 1-4) 37) HI cloud height indicator NEDN : input = no corresponding field 38) H cloud height NEDN : input = H (word 4 or 5, bits 37-40) 39) CM middle cloud type NEDN : input = Cm (word 3 or 4, bits 0-0), (word 4 or 5, bits 45-47) 40) CH high cloud type NEDN : input = Ch (word 4 or 5, bits 41-44) 41) WD wave direction NEDN : input = no corresponding field 42) WP wave period NEDN : input = Pw (word 2 or 3, bits 6-10) 43) WH wave height NEDN : input = Hw (word 2 or 3, bits 0-5) (a): Convert the input from half meters to meters. [3] 44) SD swell direction NEDN : input = Ds (word 3 or 4, bits 31-37) (a): Multiply the input by five. (b): Change the input from ones to tens. 45) SP swell period NEDN : input = Ps (word 3 or 4, bits 44-47) 46) SH swell height NEDN : input = Hs (word 3 or 4, bits 38-43) (a): Convert the input from half meters to meters. [3] 47) C1 country code NEDN : input = no corresponding field 48) C2 second country code NEDN : input = no corresponding field 49) SC ship course NEDN : input = Ship direction (word 1 or 2, bits 18-21) 50) SS ship speed NEDN : input = Velocity (word 1 or 2, bits 14-17) (a): Do not convert the input from knots/3. [Note: The input was assumed to be a coded value.] 51) A barometric tendency NEDN : input = APP (word 2 or 3, bits 13-22) (a): Convert the input to the integer of the input divided by 10. 52) PPP amount of SLP change NEDN : input = APP (word 2 or 3, bits 13-22), Indicator (word 2 or 3, bits 11-12) (a): Convert the input to the remainder of the input divided by 10. (b): Add Indicator multiplied by 10. [Note: The input was assumed to be A concatenated to ones and tenths of PPP and Indicator to be tens of PPP.] 53) IS ice accretion NEDN : input = no corresponding field 54) ES ice thickness NEDN : input = no corresponding field 55) RS ice accretion rate NEDN : input = no corresponding field 56) II ID indicator NEDN : input = no corresponding field 57-64) ID(8) ID/call sign NEDN : input = station identifier (word 1, bits 0-23), (word 2, bits 24-47) (a): Change the input from BCD. (b): Change leading colons to missing. 65) OS observation source NEDN : input = no corresponding field 66) OP observation platform NEDN : input = no corresponding field 67) T2 second temperature indicator NEDN : input = no corresponding field 68) IX station/weather indicator NEDN : input = no corresponding field 69) WX wave period indicator NEDN : input = no corresponding field 70) SX swell period indicator NEDN : input = no corresponding field 71) IRD IMM receipt date NEDN : input = no corresponding field 72) A6 allowance 6 flag NEDN : input = no corresponding field {3. Contents of supplemental attachment (Attm4)} NEDN : input = S (word 1, bits 47-47), Class (word 1 or 2, bits 22-23), Unused (word 4 or 5, bits 24-25) The 5 bits are left justified in 1 byte.