uint64 timestamp # microseconds since system boot, needed to integrate float32 indicated_airspeed_m_s # indicated airspeed in meters per second, -1 if unknown float32 true_airspeed_m_s # true filtered airspeed in meters per second, -1 if unknown float32 true_airspeed_unfiltered_m_s # true airspeed in meters per second, -1 if unknown float32 air_temperature_celsius # air temperature in degrees celsius, -1000 if unknown