Plotted entries from OPSLOG files in CRIRES report DARKRON, plot 6 (data set med_par_ch6):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS		det_ID     	values
====================================================
2012-02-05	55963.434105	CHIP2.INT1	2.04837450759837
2012-02-06	55964.351352	CHIP2.INT1	2.1970418263177
2012-02-07	55965.363533	CHIP2.INT1	2.19091058106184
2012-02-08	55966.362333	CHIP2.INT1	2.08504523771878
2012-02-09	55967.850451	CHIP2.INT1	1.96800097906571
2012-02-10	55968.437699	CHIP2.INT1	2.00747977959035