[Timestamp] Date and time (CET)
[Lon/Lat/Elevation] Coordinates as reported by the Openvehicles GPS
[Speed] Speed (km/h) as reported by the car (usually 5-10~km/h faster than GPS speed)
[Odometer] Distance driven (km) as reported by the car.
[Batrange] Remaining battery charge expressed in kilometer range (km). Reported by the car, as an estimate based on remaining battery percentage and previous usage. 
[Voltage] Voltage of the car's main battery
[current] Current in/out of the battery, calculated from changes to the SoC.
[SoC] State of Charge. Battery percentage left as reported by the car.
[SoH] State of Health. battery degradation as reported by the car. percentage of battery capacity at 100% charge compared to when the battery was new. 
[is_charging] (blank)
[is_dcfc] (blank)
[service] The 4G network that the modem is registered to
[RSSI] Received signal strength indicator of the 4G modem 
[nettype] Which interface currently is used for internet access
[air_temp] Outside temperature at the location and time as reported by the yr.no api
[cloud_fraction] As above
[rel_hum] Relative humidity as above
[wind_dir] Wind direction as above 
[wind_speed] As above
[perecipitation_type] As above
[precipitation_amount] As above, millimeters