COLUMNS FMT DESCRIPTION 1- 4 I*4 MILLISECONDS OF DAY 5- 8 R*4 TOTAL FIELD VALUE (nT) 9- 12 R*4 DELTA F WITH COSMOS 8/73 MODEL REMOVED 13- 16 R*4 ALTITUDE (KM) 17- 20 I*4 HALF-ORBIT NUMBER (1-641) 21- 24 I*4 INSTRUMENT NUMBER (1 OR 2) 25- 28 R*4 GEODETIC LATITUDE (deg) 29- 32 R*4 EAST LONGITUDE (deg) 33- 36 R*4 =0, SPARE 37- 40 I*4 MODIFIED JULIAN DAY