Contents of 1.5s modulated data files (M)

VARIABLE		DIM	#	DESCRIPTION
IYDD					Julian date of data as YYMMDD
IHMS					Time of first S sample, as HHMMSS
MSEC					IHMS in millisecs of day
NFREQ					Frequency channel 1-12
SAMP			24		Calibrated S and Z samples as log TA
					Contents depend on mode and
					bitrate.
SM			4	1	SB average for modes 1&2,SN average
					for mode 3.
				2	SN average for mode 1; 0 else
				3	SN rms for modes 1 & 2, SN rms for
					mode 3
				4	SN rms for mode 1; 0 else
GSE			3	1	X geosolar ecliptic coord in meters
				2	Y
				3	Z
SPIN					Spin period in msec
SUNANG					Dipole azimuth at msec, angle
					between sun and S-dipole normal in
					radians.
NHOUSE			10	1	Byte 1 Step number 1-72
					Step +100 for cal or unknown
					Byte 2 Status
					Byte 3 first phase
					Byte 4 second phase
				2	Byte 1 # non-fill S samples
					Byte 2 record quality
					Byte 3 mode
					Byte 4 spare
				3	Status words by byte
				4	Status words by byte
				5	Julian date of processing
				6	Frame rate in microseconds
				7-10	Spares

Note:  The first 4 1*4 elements of the NHOUSE array are
written out as single bytes on the CD.