DSET ^slp4.5.u TITLE ICOADS 4.5 DSUL UNDEF -9999 OPTIONS BIG_ENDIAN XDEF 180 LINEAR 1 2 YDEF 90 LINEAR -89 2 ZDEF 3 LEVELS 1909 1949 1979 TDEF 12 LINEAR 0Z1jan1 1mo VARS 1 slp 3 99 4.5 sigma upper limit ENDVARS