PARM = TMPF;T6NF;T6XF;P01I;TCLD;WTHR                                            

    STN    YYMMDD/HHMM      TMPF     T6NF     T6XF     P01I     TCLD     WTHR
    STL    200429/0000     78.98    78.08    82.94     0.00      OVC       R-
    STL    200429/0100     64.04 -9999.00 -9999.00     0.18      OVC    TRW+F
    STL    200429/0200     62.96 -9999.00 -9999.00     0.76      OVC     TRW-
    STL    200429/0300     62.96 -9999.00 -9999.00     0.14      OVC      TRW
    STL    200429/0400     62.96 -9999.00 -9999.00     0.26      OVC     TRWF
    STL    200429/0500     62.96 -9999.00 -9999.00     0.18      OVC     TRW-
    STL    200429/0600     62.06    62.06    78.98     0.03      OVC       R-
    STL    200429/0700     57.92 -9999.00 -9999.00     0.16      OVC         
    STL    200429/0800     55.94 -9999.00 -9999.00     0.00      OVC         
    STL    200429/0900     55.94 -9999.00 -9999.00 -9999.00      BKN         
    STL    200429/1000     55.04 -9999.00 -9999.00 -9999.00      BKN         
    STL    200429/1100     55.04 -9999.00 -9999.00 -9999.00      BKN         
    STL    200429/1200     53.96    53.96    62.96     0.01      BKN       R-
    STL    200429/1300     53.96 -9999.00 -9999.00     0.00      BKN       R-
    STL    200429/1400     55.04 -9999.00 -9999.00     0.00      OVC       R-
    STL    200429/1500     51.98 -9999.00 -9999.00     0.06      OVC      R-F
    STL    200429/1600     53.06 -9999.00 -9999.00     0.03      OVC       R-
    STL    200429/1700     55.94 -9999.00 -9999.00     0.00      BKN         
    STL    200429/1800     55.04    51.98    57.02 -9999.00      OVC         
    STL    200429/1900     53.96 -9999.00 -9999.00     0.00      OVC         
    STL    200429/2000     51.08 -9999.00 -9999.00     0.00      OVC      R-F
    STL    200429/2100     51.08 -9999.00 -9999.00     0.02      OVC       R-
    STL    200429/2200     50.00 -9999.00 -9999.00     0.02      OVC      R-F
    STL    200429/2300     50.00 -9999.00 -9999.00     0.02      OVC      R-F