I have no idea how to read that, but its interesting that it's publically available. Maybe not the exact thing WeatherBell is producing, but I think maybe Maue might be using this sight

Can't believe I'm posting a CFS model run, but Merry Christmas from the 0Z CFS

Hmmm, looking at the plots for HR 120, 168, 240 it appears the GFS is scoring quite well. Unless I'm mistaken?

Trend north

https://www.emc.ncep.noaa.gov/users/verification/global/gfs/prod/atmos/grid2grid/hgt_anom/ Is this what you're looking for? This allows you to change the parameters and time frame.