Yeah, I’m in Europe for the next week or so for work and I’m unable to spot check with my psychro dyne. It’s too bad too because the low humidity levels the last several days are really anomalous in the Seattle area this time of year. Lots of extreme local effects from proximity to water and downsloping and upsloping winds. By the time I get back, the pattern is likely to pass.
I’ve actually been concerned that it might even be reading too low at low humidity levels, but until I can compare side by side to the psychro dyne, it’s hard to say. I’m located between KTIW and KSEA. I’ve been running right between them for dewpoint. Seems reasonable for the downsloping winds and the proximity to the sound. For anyone interested, I can post the spot check results from the psychro dyne when I am back.