======================================================= t1005.dat Number of records in file: 446 Record 1: 1976 9 19 -- 22:25:00 obgrav = 80326.4 obmag = 0 cdm = 0 Record 446: 1976 9 21 -- 14:55:00 obgrav = 80323.3 obmag = 0 cdm = 0 Min/Max observed gravity (milligals): 80182.2 80364.8