Plotted entries from OPSLOG files in CRIRES report DARKRON, plot 2 (data set med_par_ch2):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS		det_ID     	values
====================================================
2012-02-06	55964.350696	CHIP2.INT1	3.57023177503147
2012-02-07	55965.362876	CHIP2.INT1	3.59795000784422
2012-02-08	55966.361689	CHIP2.INT1	3.58293533227131
2012-02-10	55968.437095	CHIP2.INT1	3.66935239938245