x1 x2 block y
-1     -1     1 80.5
-1      1     1 81.5
 1     -1     1 82.0
 1      1     1 83.5
 0      0     1 83.9
 0      0     1 84.3
 0      0     1 84.0
 0      0     2 79.7
 0      0     2 79.8
 0      0     2 79.5
 1.414  0     2 78.4
-1.414  0     2 75.6
 0      1.414 2 78.5
 0     -1.414 2 77.0