
410 Data Analysis and Statistics for Geography, Environmental Science, and Engineering
0.0 0.2 0.4 0.6 0.8
0.0
0.2
0.4
0.6
0.8
60
60
60
80
80
80
80
100
100
100
80
120
140
100
100
120
120
120
140
140
140
140
160
160
160
160
180
200
FIGURE 12.8 Variance of kriging error using 10 × 10 grid.
0.0 0.2 0.4 0.6 0.8 1.0
0.0
0.2
0.4
0.6
0.8
1.0
40
60
60
60
60
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
100
001
100
100
100
120
120
120
120
120
120
120
120
120
120
120
120
120
120
120
140
140
140
140
140
140
140
140
140
140
140
140
140 ...