A Contour Plot is the main tool in Dips for analyzing mean and/or maximum pole concentrations. It is used to visualize the clustering of orientation data not immediately evident from a Pole Plot or a Scatter Plot. The contours represent statistical pole concentrations, calculated using the distribution method (Fisher or Schmidt) specified in the Stereonet Options dialog. A Terzaghi Weighting can be applied to a Contour Plot to correct samp