Nice catch. I don’t know what happened there, but those setting are way off in RT 5.1. (I just ran back through them to check). The main takeaway there was to sample the WB setting from the gray wall behind Mairi on the right, which yields these values in RT 5.1:
See if those values look a little better for you.
I’m too lazy to go back and check if that makes sense in an older RT right now. I’ll go back through and update the page, though. Thanks for the heads up!