12 -  18 hour files: total    3 TRaP members.
/data/Petrap/2025/15P/202515P.WTPS31.PGTW.040300.RCLIPER.02040300.18.Z
/data/Petrap/2025/15P/202515P.WTPS31.PGTW.041500.AMSUM3.02041003.12.Z
/data/Petrap/2025/15P/202515P.WTPS31.PGTW.041500.GHEHR.02041200.12.Z
Grid information: nc,nr,clat,clon:      800     800  -21.75 -173.80
Total independent TRaPs used:   3
Total Ensemble TRaP members:   3