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function f(x) { y = 0.02518 * x + 7.092; return y }
function g(x) { y = (49.17 + x)/19.93; return y }
...
aX = 0; bX = 400; aY = 0; bY = 25
Dx = 50; Dy = 5
...
Qx = [30,150,110, 60,150,370,280,330]; Qy = [5,  8, 10, 12, 12, 12, 15, 20]
Q1x = [185]; Q1y = [11.75]
...
AX=BX=AY=BY=""
AY = "X"; BX = "Y"
...
AAX=aX; BBX=bX; AAY=aY; BBY=bY