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The first image for each data set and the corresponding average background versus resolution for 4puc (top), 4ef1 (middle) and 4kw2 (bottom). Ice rings are visible as discrete or diffuse rings. Note the irregular ice rings in the diffraction image of 4puc resulting from the dominating ice-crystal orientation. Also note that the maximum resolution on each image differs; therefore, the ice rings are not always in the same place on the detector.
