Mains y: 457,626 Mains X: 344,088 + (1126,566 - 344,088) / 2 1126,566 + (1910,904 - 1126,566) / 2 1910,904 + (2693,220 - 1910,904) / 2 2693,220 + (3477,993 - 2693,220) / 2 Lower y: 623,816 Lower Y: 679,888 + (1734,862 - 679,888) / 2 2392,429 + (3409,288 - 2392,429) / 2