Request a month of SRML[1] data from solardat and read it into
    a Dataframe.

    Parameters
    ----------
    station: str
        The name of the SRML station to request.
    year: int
        Year to request data for
    month: int
        Month to request data for.
    filetype: string
        SRML file type to gather. 'RO' and 'PO' are the
        only minute resolution files.

    Returns
    -------
    data: pd.DataFrame
        One month of data from SRML.

    References
    ----------
    [1] University of Oregon Solar Radiation Measurement Laboratory
        `http://solardat.uoregon.edu/ <http://solardat.uoregon.edu/>`_

def read_srml_month_from_solardat(station, year, month, filetype='PO'):
    """Request a month of SRML[1] data from solardat and read it into
    a Dataframe.

    Parameters
    ----------
    station: str
        The name of the SRML station to request.
    year: int
        Year to request data for
    month: int
        Month to request data for.
    filetype: string
        SRML file type to gather. 'RO' and 'PO' are the
        only minute resolution files.

    Returns
    -------
    data: pd.DataFrame
        One month of data from SRML.

    References
    ----------
    [1] University of Oregon Solar Radiation Measurement Laboratory
        `http://solardat.uoregon.edu/ <http://solardat.uoregon.edu/>`_
    """
    file_name = "{station}{filetype}{year:02d}{month:02d}.txt".format(
        station=station,
        filetype=filetype,
        year=year % 100,
        month=month)
    url = "http://solardat.uoregon.edu/download/Archive/"
    data = read_srml(url + file_name)
    return data