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