We used radiometer cleaning as our excuse to go boating this morning and thus visited s15, s9, and s1 (in that order). However, nearly continuous rain during these visits meant that a) the up-looking surfaces were wet immediately after being wiped b) totally overcast sky won't be good for measuring any effect of cleaning c) rain was already doing a pretty good job of cleaning without human intervention. I did not need to use any water from the squeeze bottle.
As part of this process, Steve S has been releveling the sensor in "roll". At s9 and s1 I also adjusted the legs to attempt a leveling in "pitch".
s15: ended 10:04 (local)
s9: ended 10:33 (local)
s1: didn't record – approximately 11:00