Which model does your datalogger work with? Neither Instromet (Met4Net) or
Davis Weatherlink appear to offer this. However, we work out air frost
duration directly from a thermograph plot.

Regards

Mike

Pitsford Hall weather station
www.northantsweather.org.uk


"Richard Griffith" wrote in message
...
I have a datalogger which records the amount of time the sensor is below
freezing, this is quoted in either hours / minutes or Days / Hours /
Minutes. I would be interested to know how other people calculate this
data. The figures I have for February for my station are

Hours Minutes
08 18 01-03 Feb
35 43 03-10th
63 06 10-17th
37 12 17-24th
11 08 24-29th

Which gives me a total of 155hrs 27min.

Regards

Richard
West Sussex.