def get_mean_per_split(self):
        """Get the mean elapsed time per split of each stopwatch (excluding the current split).

        Returns
        -------
        mean_elapsed_time_per_split : List[datetime.timedelta]
        """
        return [div_timedelta(sum(stopwatch.split_elapsed_time, datetime.timedelta()),
                              len(stopwatch.split_elapsed_time))
                if stopwatch.split_elapsed_time else datetime.timedelta()
                for stopwatch in self]