def _unpackLatLon(index):
    """
    Fixes the string formatting of the indexs 
    args:
        index:  str
            string of format "(longitude, latitude)""
    return:
        longitude, latitude: Floats
            """
    # fix the latitude and longitude 
    lonST, latST = index.split(", ")
    return float(lonST[1:]), float(latST[:-1])