def METHOD_NAME(self):
    """
    Retrieves the minimum recorded temperature of thermal
    Returns:
        A float number, the minimum recorded temperature of thermal in Celsius
        up to nearest thousandth of one degree Celsius, e.g. 30.125
    """
    if len(self.temperature_list) == 0:
        self.get_temperature()
    return round(float(min(self.temperature_list)), 1)