I have been interested in collecting weather data logs for many years. Logs have been gathered from Bahrain, Oman, and Thailand, spanning some 12 years. My current location in Chiang Mai is called Sansai (18.52. North and 99.01 South, grid reference NK98mm ) some 15 Klm north of Chiang Mai City Airport.

The equipment is a Davis weather data center with a recent addition two years ago, of a rain collector. No claim is made for true barometric readings, as I have never carried out any calibration tests against a know reference, so the barometric readings are relative only.

The weather link (modem) and data logger are located in the tool shed under the 10 meter water tower, where the wind speed, wind direction vane, and humidity unit are installed on top. Some 20 meters four core cable runs from the tool shed to the radio room computer.