Certainly Outernet gets all sorts of telemetry from each of the Internet connected DreamCatchers.
If there were two DreamCatchers, one with a cone and the other without a cone, reporting from the same location, it would be pretty easy to look at the status screens for each of them and determine how much it helps over a period of a week or so so that factors like day/night, outdoor temperature and weather can be observed.
That data can be harvested by a bash chron job running, say every 10 minutes and writing the status samples into a CSV file. Then the whole data set could be imported into Excel and with a little magic, we would have a nice graph.
I certainly would be interested in helping.