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 dt # delta time between samples (microseconds) float32 resolution_hz float32[2] peak_frequency_x # x axis peak frequencies float32[2] peak_frequency_y # y axis peak frequencies float32[2] peak_frequency_z # z axis peak frequencies