This file has good data…as far as I can see… more like what I would expect
So wb co-eff of 1.623 1 2.023 CT 3794 from camera data
Darktable opens it with a warning of less than full support but it looks fine and the wb values are in the same ball park as the camera data
1.585 1 1.984 CT 3883
RT
is 1.879 1 1.507 CT 5257
So pretty close to the daylight settings from the camera data as opposed to as shot…