How to use the ulmo.ncdc function in ulmo

def _climo_wind(config, dates=None):
    """
     Fetches climatological wind data using ulmo package to retrieve NCDC archives.

    :param config:
    :param dates: list of datetime objects
    :return: dict: dictionary of wind values
    """
    import ulmo

    if config['verbose']:
        print('_climo_wind: fetching data from NCDC (may take a while)...')
    v = 'WSF2'
    wind_dict = {}
    D = ulmo.ncdc.ghcn_daily.get_data(get_ghcn_stid(config), as_dataframe=True, elements=[v])

    if dates is None:
        dates = list(D[v].index.to_timestamp().to_pydatetime())
    for date in dates:
        wind_dict[date] = {'wind': D[v].loc[date]['value'] / 10. * 1.94384}

    return wind_dict