code: func (d *BME280Driver) Humidity() (humidity float32, err error) {
  	var rawH uint32
  	if rawH, err = d.rawHumidity(); err != nil {
  		return 0.0, err
  	}
  	humidity = d.calculateHumidity(rawH)
  	return
  }
docs: // Humidity returns the current humidity in percentage of relative humidity