def create_point(fields, timestamp, decoder, version):
    """
    Create a decoded data point in JSON format

    :returns: a JSON formatted time series data point
    """
    point = {'time': timestamp, 'measurement': '', 'tags': {'satellite': '',
        'decoder': decoder, 'station': '', 'observer': '', 'source': '',
        'version': version}, 'fields': fields}
    return point
