"x1","x2","x3","y"
-1,-1,0,18.3
-1,1,0,22.2
1,-1,0,23
1,1,0,23
-1,0,-1,3.3
-1,0,1,19.3
1,0,-1,19.3
1,0,1,20.3
0,-1,-1,13.1
0,-1,1,23
0,1,-1,20.9
0,1,1,21.5
0,0,0,22
0,0,0,21.3
0,0,0,22.6