Changes to CAMMICE Level Zero Interface for Version 4.0      June 20, 1997

1.	Minor frame number in get_msrates routine scalers changed to
	accumulation times in integer milliseconds. 

	get_msrates, times, mf, sectors, esa, chans, cnts, err

	changed to

	get_msrates, times, delta, sectors, esa, chans, cnts, err


2.	Accumulation times in milliseconds added to get mics spin 
	totals routine.

	get_mtotrts, times, esa, chans, counts, err

	changed to

	get_mtotrts, times, delta, esa, chans, counts, err


3.	Accumulation times for sectorsa and sectorsb added to 
	get mics singles routine.

	get_msing, esa, timesa, sectora, countsa, $
		        timesb, sectorb, countsb, err

	changed to

	get_msing, esa, timesa, dlta, sectora, countsa, $
		        timesb, dltb, sectorb, countsb, err

4.	Added error trap to Level Zero file open routine.  Now returns
	error string which is a null string for no error.  Also modified
	routine to print filename, date and day number from header.

	opn_LZ, filename

	changed to

	opn_LZ, filename, err

5.	Added new routine get_msrts to obtain sectored rates with 
	pitch angles.  Pitch angle mode controls pitch angle range to be
	either 0-180 or 0-360 degrees.  Note that the 0-360 degree
	calculation may return spurious results for cases in which
	the magnetic field projection in the spin plane is close to
	either the sun-aligned or anti-sun-aligned directions.

	get_msrts, pa_mode, times, delta, sectors, esa, chans, $
		cnts, pang, err

