I have tomatoes and blue berries that grow much bigger in a greenhouse too and I find that warmer weather makes things grow better than cool. I find that dandelions will bloom at 50 degrees and that most other plants and even bees don't do well at less than 50 degrees and there are tons of stuff on line from different places that will not need expensive instruments but what else would these guys be doing and it does spread the government money around rather than the IRS. Now when it starts cooling all of these studies will have to be done again to determine that things won't grow as well when it gets cooler. It's a good article, well written and educational as to what and where some things are located on the slope so thanks.