ak2_avg_accel ak2_max_accel ak2_point_count ak2_stddev_accel cyface_avg_accel cyface_max_accel cyface_point_count cyface_stddev_accel endiio_avg_acceleration endiio_max_acceleration endiio_point_count endiio_stddev_acceleration h3_index has_ak2 has_cyface has_endiio has_robot modality_count robot_avg_accel robot_max_accel robot_point_count robot_stddev_accel