Fig. 1From: Analysis of clinical patient-specific pre-treatment quality assurance with the new helical tomotherapy platform, following the AAPM TG-218 reportViolin plot of the complete database of collected measurements distinguished among the different gamma analysis criteria. The central white dot marks the median, the edges of the box correspond to the 25th and 75th percentiles, the whiskers extend to the adjacent values which are the most extreme data values that are not outliers, and data outside the whiskers are outliers. L stands for local gamma normalization, G for global oneBack to article page