12 -  18 hour files: total    5 TRaP members.
/data/Petrap/2025/31P/202531P.WTPS31.PGTW.201500.AMSUM1.04201144.18.Z
/data/Petrap/2025/31P/202531P.WTPS31.PGTW.201500.AMSUM3.04201235.18.Z
/data/Petrap/2025/31P/202531P.WTPS31.PGTW.202100.GHEHR.04202000.12.Z
/data/Petrap/2025/31P/202531P.WTPS31.PGTW.202100.RAIN.04201612.12.Z
/data/Petrap/2025/31P/202531P.WTPS31.PGTW.202100.RRH_AMSR.04201614.12.Z
Grid information: nc,nr,clat,clon:      800     800  -12.05 -137.85
Total independent TRaPs used:   5
Total Ensemble TRaP members:   5