The Davis temperature and humidity sensor is housed in a Met1 stevenson screen. A Tinytag TV-4505 view calibrated datalogger is also housed within the screen and is used as a check gauge to ensure the davis sensor is displaying the correct temperature and humidity. Rainfall: Snowdon raingauge is used as a checkgauge for the automatic davis raingauge. The top of the Snowdon gauge is 30cm above the ground. Davis rain gauge 2m above the ground. Wind speed/direction: Sensors 5 metres high Davis Weatherlink live runs the station.