Plotted entries from OPSLOG files in CRIRES report DARKRON, plot 3 (data set med_par_ch3):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS		det_ID     	values
====================================================
2012-02-06	55964.350696	CHIP3.INT1	3.58793759351788
2012-02-07	55965.362876	CHIP3.INT1	3.59813202188505
2012-02-08	55966.361689	CHIP3.INT1	3.58412920286883
2012-02-10	55968.437095	CHIP3.INT1	3.63920426394248