def format_out(string_name, forecast_hour, value):
    """
    formats polygon output

    :param string_name: name of output field
    :param forecast_hour: forecast hour of output
    :param value: value of output

    :returns: dict forecast hour, field name, and value
    """
    return [{
        'Forecast Hour': forecast_hour,
        string_name: value
    }]