Anisotropy at line tie. Percent S-wave animuthal anisotropy as a function of P-wave azimuthal AVO difference. The azimuthal AVO difference is taken as the absolute value of the numerical difference in AVO parameter between measurements on line 1 and line 2. AVO gradient in red; CP or [(AVO Gradient AVO Zero-Intercept)/2] in blue. Error bars are shown by the vertical and horizontal line segments or data points.