get_stats_data(noise_threshold, below_threshold, above_threshold, fixed, unconverted) {
    const data = {};
    for (const id in PERF.stats_by_id) {
      data[id] = PERF.get_stats_data_by_id(id);
    }
    return data;
  }
Returns all stats recorded as a plain data object.
@returns {Object}
@see get_stats_data_by_id