[werk_ag]

...  Of course Cumulus can maintain a running average for wind speed, but not AFAIK for the Solar measurements.

Hi Alan

I think that Cumulus, regarding the Solar Radiation doesn't make any running average, usually that is done by the weather station itself. If I'm not wrong the the solar radiation on the Davis weather stations is a 10 min rolling average. The WeatherDuino Pro2 uses a 2.5 minutes rolling average, which turns easier the visualization of spikes.

Regards
Werk_AG