Distributions of preferred angles (measured with respect to the x-axis) for the stack of all fields (left), ELAN only (central), and quasars only (right), after each individual field has been first oriented with the x-axis along the direction of its Lyα nebula. Both the minimum rms distance and inertia methods result in angles compatible with 0, within their respective errors, for the case of all the field stacks and the case of only the quasar stack. The stack of rotated ELAN fields results in angles that are not compatible with 0.