Plotted entries from OPSLOG files in MIDI report DETRON, plot 1 (data set RON_median_ops):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS      	values
====================================================
2013-06-16	56460.436053240000000	11.879137
2013-06-17	56461.396354170000000	12.527173
2013-06-18	56462.422870370000000	11.812475