curvature versus slope n = 338540 X=0, Y = 61.35 +/- 21.30 Weighted least-squares fit: Y = 67.8 + 1.681 X + -0.01893 X**2 slope versus dZ, curvature < 5 n = 212708 Weighted least-squares fit: Y = 10.3 + 0.453 X + -0.00034 X**2 at X = 100, Y = 52.2 effective RMSE xy = 80.4 slope versus dZ, curvature < 15 n = 303032 Weighted least-squares fit: Y = 11.5 + 0.394 X + 0.00057 X**2 curvature versus dZ, slope < 10 n = 3664 X=0, Y = 13.47 +/- 7.83 Weighted least-squares fit: Y = 13.4 + 0.410 X + 0.46035 X**2 Number of samples 340412 Max dz = 900 Mean dz = 35 RMS dz = 55.3714727996 100cm = 96.8855387002 percentile value of dz