def read_antarc_station_ids(path, discriminator):
    """Reads a SCARs station ID files and returns a dictionary
    mapping station name to the 12-digit station ID.
    """
    dict = {}
    for line in open(path):
        id11 = line[:11]
        station = line[12:42].strip()
        dict[station] = id11 + discriminator
    return dict