BoxAndWhiskerXYDataset boxAndWhiskerData 
                = (BoxAndWhiskerXYDataset) dataset;

        Number x = boxAndWhiskerData.getX(series, item);
        Number yMax = boxAndWhiskerData.getMaxRegularValue(series, item);
        Number yMin = boxAndWhiskerData.getMinRegularValue(series, item);
        Number yMedian = boxAndWhiskerData.getMedianValue(series, item);
        Number yAverage = boxAndWhiskerData.getMeanValue(series, item);
        Number yQ1Median = boxAndWhiskerData.getQ1Value(series, item);
        Number yQ3Median = boxAndWhiskerData.getQ3Value(series, item);