uint64 timestamp # time since system start (microseconds)
uint64 timestamp_sample
uint32 device_id # unique device ID for the sensor that does not change between power cycles
float32 x # magnetic field in the FRD board frame X-axis in Gauss
float32 y # magnetic field in the FRD board frame Y-axis in Gauss
float32 z # magnetic field in the FRD board frame Z-axis in Gauss
float32 temperature # temperature in degrees Celsius
uint32 error_count
uint8 ORB_QUEUE_LENGTH = 4