def load_stations(model):
    """Load up our station metadata and return xref."""
    fn = "bufrgruven/stations/%s_bufrstations.txt" % (model,)
    stations = {}
    with open(fn) as fh:
        for line in fh:
            tokens = line.split()
            if len(tokens) < 4:
                continue
            stations[tokens[0]] = tokens[3].lower()

    return stations