['area', 'duration', 'end_time', 'max_speed', 'max_thresh', 'max_zscore', 'mean_speed', 'mean_zscore', 'median_speed', 'median_zscore', 'min_speed', 'min_zscore', 'speed_at_end', 'speed_at_start', 'start_time', 'total_energy']