The picture is of the temperature differences between the greenhouse interior and exterior in the afternoon. I know we have had a really mild winter and for that I am pretty grateful. The first time wintering in the airstream has been relatively hassle free and incredibly informative. We have ideas for next season and strategies to maintain comfort for the rest of this season. We have this little thermostats with probes tucked by our pipes so we can monitor the temps there, probes for interior and exterior of greenhouse and for the cabin of the coach. They really have helped us to make sure our pipes stay unfrozen and track temps generally.
Airstream_Wheeler 