7992 20260216102758.0 DATASET-2026-0015 Bamahry, Fikri EPOS-GNSS data quality check (update for 2025) 2025 The long-term tracking performance for the EPOS-GNSS stations based on data availability and data quality metrics (the ratio observed vs. expected observations, the percentage of missing epochs, the number of observed satellites, the maximum number of observations, the number of cycle slips, the standard point positioning results and the multipath values on code observations). The data quality metrics are retrieved from the EPOS-GNSS data nodes where they were computed using the G-Nut/Anubis software. Input files are the daily RINEX (V2 or V3) observation files available from each node. All of the quality plots contain information for the GPS, GLONASS, GALILEO, BeiDou, IRNSS, QZSS, and SBAS constellations on all available frequencies. Updated daily. ESFRIFED/ EF/ 211/SERVE / SERVE NO GNSS quality metrics Legrand, Juliette Bruyninx, Carine fikri.bamahry@ksb-orb.be https://gnssquality-epos.oma.be/DOI/ROB-EPOS-EGDM.php https://gnssquality-epos.oma.be/map_Nodes_data_availability.php https://gnssquality-epos.oma.be/rinex_data_quality/daily_quality.php https://gnssquality-epos.oma.be/rinex_data_availability/daily_availability.php https://gnssquality-epos.oma.be/rinex_data_availability/rinex_error_list.php https://gnssquality-epos.oma.be/rinex_data_quality/elev_model.php DATASET