1997 was a year of flux! To know what data occurs in which column of a file, you must know the logger program configuration. Logger programs configurations can be found in /home/eos/in-situ.data/mmsa/logger_programs/[YYYYMMDD], where YYYY = year, MM=Month, DD=Day. That date is the date (or approximate date) that data started being logged for a particular configuration. The .../logger_programs/... subdirectories that are associated with the 1997 data are: 19930417 19970131 19970303 19970414 19970418 19970919 19971027 19971120 D.Donahue 5/2001 Addendum 1/3/2002: In the near future /home/eos/in-situ.data/mmsa will be the same as /home/mmsa