// Delta extrapolated curve // x y dy 15.700000 -0.023097 0.003436 28.799999 -0.006026 0.001964 49.299999 0.007423 0.001387 78.300003 0.016175 0.001130 117.099998 0.021030 0.000992 167.600006 0.022481 0.000872 234.199997 0.020875 0.000893 298.600006 0.014450 0.001450 350.600006 0.009253 0.001840