#
#		GPS data header
# 	For GPS deployed on M1 mooring
# 	Deployment date 24 Sept 1998
#
# GPS  data records in this file contain 4 floating-point values and
# 2 integer values, as follows:
#
# time latitude longitude std_dev samples time_on status
#
# time:  GMT time.  Format is ddd.fffff, for julian day and fraction of day.
# latitude:  Latitude in degrees north (floating point)
# longitude:  Longitude in degrees west (floating point)
# std_dev:  Standard deviation of position in meters (floating point)
# samples:  Number of samples taken to yield position and std_dev (integer)
# time_on:  Number of seconds GPS receiver was powered on
# status:  Magellan receiver status word.  16 bit integer in hexadecimal,
#	   with following fields:
#	Bits 8-15: Receiver mode, as follows:
#			0 = Sky Search
#			1 = Searching
#			2 = Gathering ephemeris
#			3 = Getting 2D fixes
#			4 = Getting 3D fixes
#			5 = Dead Reckoning (2D)
#			6 = Dead Reckoning (3D)
#			7 = Insufficient sats up
#			8 = Not getting fixes (sats blocked)
#	Bit 7: Unused
#	Bit 6: NVRAM checksum fail
#	Bit 5: RAM checksum fail
#	Bit 4: oscillator off frequency (may not track satellites)
#	Bit 3: using NVRAM setup
#	Bit 2: Receiving RTCM (differential corrections)
#	Bit 1: No fixes yet
#	Bit 0: Unused
#