First summary of the method comparisons using five methods: Kriging, GWR, GAM, CAI and Fusion. All predictions are done for the Oregon case study. Methods of assessment include: 1)accuracy metrics (MAE&RMSE), 2)multisampling, 3)accuracy in term of distance to closest training station, 4)map visualization, 5)accuracy in term of station density and 6)accuracy profiles at specific stations. This presentation is will be updated and edited at later stages.