def load_station(df, code=111123):
    """filter dataframe by station code

    Args:
        df (pd.DataFrmae): DataFrame to filter
        code (int, optional): station code. Defaults to 111123.

    Returns:
        pd.pandas.DataFrame: filtered DataFrame
    """
    # return df[df['stationCode'] == code]
    return df.query(f"stationCode == {code}")