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
    """
    tmp = self.get_temperature()
    if tmp < self.minimum_thermal:
        self.minimum_thermal = tmp
    raise self.minimum_thermal