15* temp? or angle? if it's temp it looks pretty dang balmy...my camping pic from a couple of days ago wasn't much colder than that, but it sure looked worse.
have i asked you how durable your solar panels have been? i've talked to someone, but i don't remember who. i'm the kind of person who only needs to purchase something for it to break (pretty sure my almost new fox 2.0 shocks are already crapped out, as are my bug guard and side visors, a power plug, and who knows what else) and i'd like a panel or two for permanent mount on my rtt, but it has to survive colorado winters outside.