Figure 23.
The graph shows time in days from 0 to 900 and mean squared error from about 0.1 to 10 degree celsius squared. Curves labelled G A T, Kriging, G P, and A N N show varied trends. G A T rises to around 3 then fluctuates near 2, Kriging increases steadily to about 3, G P peaks near 5 then decreases to near 1, and A N N rises near 10 early then drops below 1 and fluctuates.Comparison of the mean squared errors using three additional point sensors