The percentage corresponds, for each constellation tracked by the station, to the ratio of the number of observations in the daily RINEX file with respect to the number of expected observations:

• 1 freq. : all observations are counted.
• 2+ freq.: only observations on at least two frequencies are counted. These are the observations useful for geodetic positioning.

The black horizontal line indicates the elevation cut off angle as set in the station log file. The purple line is the lowest elevation cut off observed in the RINEX data. Red, green and blue vertical lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware).

These plots display, for each constellation tracked by the station, the number of missing epochs. The TOT (total) value takes all constellations into account.
Red, green and blue vertical lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware).

These plots display the number of observed healthy satellites for each constellation tracked by the station.
Red, green and blue vertical lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware).

These plots display, for each constellation tracked by the station, the maximum of the number of observations counted for each frequency. The TOT (total) value is the sum of all maxima.
Red, green and blue vertical lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware).