Plotted entries from OPSLOG files in UVES report CD_ALIGN_DHC, plot 8 (data set psCD4rms_P):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS      	values
====================================================
2012-02-24	55982.442606	0.0334
2012-02-25	55983.442118	0.0393
2012-02-26	55984.437823	0.0307
2012-02-27	55985.439768	0.0394
2012-02-28	55986.462557	0.0368
2012-02-29	55987.460590	0.0378
2012-03-01	55988.465837	0.0398
2012-03-02	55989.470109	0.0418
2012-03-03	55990.479306	0.0347
2012-03-04	55991.447055	0.0383
2012-03-05	55992.438353	0.0394