Relationship between SDV and RIN. Comparison of the SDV and RIN integrity metrics for a panel of seven RNA samples. "Treatment" denotes the duration of thermal degradation treatment used. Each group includes nine observations, except for treatment four which corresponds to a 12-minute incubation at 90°C and, which includes only seven observations. The thicker horizontal line shows the median, boxes show the upper and lower quartiles and whiskers extend to the most distant data point within 1.5 times the interquartile range of the relevant quartile. Values beyond this are shown as individual data points.