After the rain last night (timing not verified), the undercanopy Rsw.in died, though it wasn't noticed until late in the day. About 1815-1830 determined that water got into the mote box and the next-to-the-left port no longer works. Pulled the wetness sensor to allow the radiometers to occupy the remaining ports. Ultimately, this mote should be replaced. (It may be good that I brought a spare with me!)