@staticmethod
def multi_frequency_shift(timeseries_list, freqs_list):
    """ Calculate shifted frequency results of all time series
            in list by using the frequency with the same index in the frequency list.
        :param timeseries_list: timeseries list retrieved from dpsim results
        :param freq: frequency by which the timeseries should be shifted
        :return: dict of shifted time series
        """
    result_list = {}
    for ts, freq in zip(timeseries_list, freqs_list):
        ts_shift = ts.frequency_shift(freq)
        result_list[ts.name] = ts_shift
    return result_list
