Plotted entries from OPSLOG files in VIRCAM report DARKMED_1_10011_AVG, plot 1 (data set det_avg):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS		det_ID     	values
====================================================
2012-01-23	55950.406214	AVG				0.315552
2012-01-24	55951.378648	AVG				0.0415649
2012-01-25	55952.374003	AVG				-0.316345
2012-01-26	55953.363612	AVG				-0.0324097
2012-01-27	55954.379911	AVG				-0.0882568
2012-01-28	55955.381791	AVG				-0.217041
2012-01-28	55955.627721	AVG				-0.303772
2012-01-29	55956.335913	AVG				-0.0354614
2012-01-30	55957.339899	AVG				-0.0770874
2012-01-31	55958.394983	AVG				0.0606079
2012-02-01	55959.386959	AVG				0.0268555
2012-02-02	55960.390161	AVG				-0.370117
2012-02-03	55961.391233	AVG				-0.097168
2012-02-04	55962.384058	AVG				0.177307
2012-02-04	55962.781396	AVG				-0.339233
2012-02-05	55963.398398	AVG				-0.255615
2012-02-06	55964.328614	AVG				0.0648804
2012-02-06	55964.473927	AVG				0.255005
2012-02-07	55965.318380	AVG				0.333496
2012-02-08	55966.518489	AVG				0.0354614
2012-02-09	55967.323975	AVG				0.0822754
2012-02-10	55968.392809	AVG				-0.155457