The semivariogram surface indicates there is spatial autocorrelation in the data. Knowing that thereare no outlier (or erroneous) sample points in the dataset, you can proceed with confidence to thesurface interpolation. You will be able to create a more accurate surface than the one you created inexercise 1 using default options and parameter values because you now know that there is trend and anisotropy in the data and you can adjust for it in the interpolation. Also, a data transformation mayimprove the prediction model.