Data are collected every 5 minutes.
This page does not autorefresh, you will gave to hit reload to see the latest chart.
No guarantee of accuracy is made but the data are usually within 0.5 degree of a calibrated measurement.
Data are collected using an Atmel mega8 microcontroller using software written by Millstream Computing.
Charts and statistics are produced using Python on a Linux system. Strange straight lines and lack of data are because I'm rewriting some of the code at the moment.
The Python code is here