x1.(in.)	x2.(in.)	y
-1.2	-1.2	.858
-1.2	0	3.156
-1.2	1.2	3.644
0	-1.2	4.281
0	0	3.481
0	1.2	3.918
1.2	-1.2	4.136
1.2	0	3.364
1.2	1.2	4.018