// Delta // x y dy 8.310000 -0.017309 0.001579 15.700000 -0.005264 0.002030 28.799999 -0.003269 0.001686 49.299999 0.004235 0.001595 78.300003 0.009451 0.001598 117.099998 0.014891 0.001576 167.600006 0.014839 0.001447 234.199997 0.011692 0.001399 298.600006 0.007285 0.001939 350.600006 0.003713 0.001948