Plotted entries from OPSLOG files in CRIRES report DARKRON, plot 8 (data set med_par_ch8):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS		det_ID     	values
====================================================
2012-02-05	55963.434105	CHIP4.INT1	2.02914247972626
2012-02-06	55964.351352	CHIP4.INT1	2.1374558407292
2012-02-07	55965.363533	CHIP4.INT1	2.08544225289157
2012-02-08	55966.362333	CHIP4.INT1	2.04593759569887
2012-02-09	55967.850451	CHIP4.INT1	1.94846715604743
2012-02-10	55968.437699	CHIP4.INT1	2.01828835108296