A quality score, a coordinate solution and agreement between two solutions answer different questions. We keep those boundaries visible.
The bundled DUND sample scored 79.5 (Good) in Fast Mode: all epochs were present across 122 satellites in 5 constellations (GPS, GLONASS, Galileo, BeiDou, QZSS); multipath scored 29/30, and cycle slips scored 10.5/30. Its sampling interval is 30 seconds. Open the bundled example in the free quality check for the latest computed result.
How the quality score is calculatedPrecise-positioning cross-check runs two independent scientific-grade geodetic engines on the same uploaded observation set, then compares matched station coordinates. It is separate from the Fast Mode quality check. Both sides must return usable results for a two-sided comparison; an absent solution is not agreement.
Read the processing method and capability limitsThe approved cross-check agreement threshold is 20 mm in three dimensions per uploaded station. The run is within threshold only when every uploaded station has a two-sided comparison at or below that difference. Added reference stations are informative, not the deciding population. The threshold determines the agreement conclusion, not permission to publish a solution.
The initial approval used 14 samples, below the planned 20-sample gate: eight uploaded stations in live runs and six acceptance pairings. The owner accepted that limited evidence. It is not independent certification or a promise that future uploads will agree.
Two solutions can share errors in input data, station metadata or reference-frame assumptions. Agreement does not establish external accuracy, legal suitability or fitness for a deliverable. Check frame, epoch, antenna setup and independent control. We publish failure rates and charging boundaries so you can decide whether a run is appropriate.
View live status and methodologyRefund boundaries