slv.measurements.mobile.receptors.load_trax_fixes#

slv.measurements.mobile.receptors.load_trax_fixes(cache=None, location='on_track')[source]#

Time_UTC, Latitude_deg, Longitude_deg of the location rows of the cached TRAX record (obs.parquet), one row per distinct second, time-sorted.

Reads only those columns (pyarrow, filtered on state) — the full parquet with CH4 is ~6 GB in memory, the fixes alone ~1 GB.