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Do any of the formats (CSV, NMEA, GPX, or FUSION) record HDOP, number of satellites, or fix type? Sample files for each format would help a lot.
#1 · October 6, 2026, 9:38 pm
GPX files include an hdop value. NMEA output uses GNGGA and GNGSA messages, which provide HDOP, the number of satellites, and fix type.
The supplied standard CSV and Columbus Fusion CSV samples contain position, altitude, speed, and heading, but do not include HDOP, satellite count, or fix type. Therefore, GPX or NMEA should be used when fix-quality information is required.
Sample files were provided for all four formats:
Recorded tracks can also be played back using TimeAlbum Pro: https://cbgps.com/download/tap/tap_support_en.htm.
GPX example showing <hdop>0.87</hdop>:
NMEA example showing a GNGGA record; the highlighted fields include satellite count (12) and HDOP (0.83):
