The first few links on that page actually use C instead of Anomalous C.
One of the charts shows most of the worlds dew points seemingly climbing which would say that the humidity is increasing not decreasing wouldn't it?
I am still suggesting plotting all the data. Creating a world humidity anomaly is harder than the temperature anomaly. I keep trying to express my concern with averages. I keep failing to express it in a way that Warmists understand. Averages are an awesome tool. Be very wary of averages because they will bite you.
How in the world did David Robinson (Basket Ball Center at > 7' tall) get into the Nuclear Navy? Apparently he was a good student, but practically, I could barely get around the engine room at 6' 3".