Plotted entries from OPSLOG files in MIDI report DSPTRN_2.0, plot 5 (data set TRANS_GRISM_NeII_ops):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS      	values
====================================================
2012-02-07	55965.390324	0.507311
2012-02-08	55966.382431	0.50636
2012-02-09	55967.392928	0.507097