@staticmethod
def interpolate_cmpl_list(timeseries_list, timestep):
    """ Interpolates list of complex timeseries with new timestep
        :param timestep:
        :return:
        """
    result_list = {}
    for name, ts in timeseries_list.items():
        ts_intp = ts.interpolate_cmpl(timestep)
        result_list[ts_intp.name] = ts_intp
    return result_list
