def write_ascii_series(series, output, **kwargs):
xarr = series.xindex.value<EOL>yarr = series.value<EOL>return savetxt(output, column_stack((xarr, yarr)), **kwargs)<EOL>
Write a `Series` to a file in ASCII format

    Parameters
    ----------
    series : :class:`~gwpy.data.Series`
        data series to write

    output : `str`, `file`
        file to write to

    See also
    --------
    numpy.savetxt
        for documentation of keyword arguments