DOUR00BEL

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:

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

The horizontal black dotted line (log ele) indicates the elevation cut off angle provided by the station manager in the station site log file (available from M³G). The lowest elevation cut off observed in the RINEX data is indicated in purple (obs ele). In theory "log ele" and "obs ele" should agree. Differences can be caused by degraded tracking at low elevations (obstructions or erroneous GNSS equipment) or by an incorrect elevation cut off angle in the station site log.

Red vertical lines, green and blue vertical dotted lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware) as indicated by the station manager in the station site log available from the M³G GNSS Metadata Catalog. The purple points in the top of the plot indicate the daily RINEX data availability at the data node.

These plots display the number of epochs without any GPS data. The plots for other satellite constellations can be accessed by clicking "Show plots other constellations" button.

Red vertical lines, green and blue vertical dotted lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware) as indicated by the station manager in the station site log available from the M³G GNSS Metadata Catalog. The purple points in the top of the plot indicate the daily RINEX data availability at the data node.

These plots display the number of observed satellites for each constellation tracked by the station.

Red vertical lines, green and blue vertical dotted lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware) as indicated by the station manager in the station site log available from the M³G GNSS Metadata Catalog. The purple points in the top of the plot indicate the daily RINEX data availability at the data node.

These plots display, for each constellation tracked by the station, the maximum of the number of observations counted for each frequency.

Red vertical lines, green and blue vertical dotted lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware) as indicated by the station manager in the station site log available from the M³G GNSS Metadata Catalog. The purple points in the top of the plot indicate the daily RINEX data availability at the data node.

These plots display the number of identified phase cycle slips for each constellation tracked by the station.

Red vertical lines, green and blue vertical dotted lines indicate respectively a change of antenna, receiver or receiver configuration (including firmware) as indicated by the station manager in the station site log available from the M³G GNSS Metadata Catalog. The purple points in the top of the plot indicate the daily RINEX data availability at the data node.