Figure 1. Boxplot of drug sensitivity in SCLC cells using the CGP dataset.

There are 31 cell lines for small cell lung cancer. The boxplots show drugs listed on the x-axis and the corresponding IC₅₀ values (in µM) listed on the y-axis. The ‘ceiling’ for drug efficacy was set at 8 µM; if the IC₅₀ of all tested cells was above this concentration a single line would appear at the top of the graph. This represents an ineffective drug. By contrast, if all tested cells were sensitive to a given drug, a narrow box and whisker plot would appear at the bottom of the graph. The line within individual boxes represents the median IC₅₀ value of all tested cells and the circles represent ‘outlier’ cells whose IC₅₀ values do not fall within the 25–75% quantile of all IC₅₀ values measured for that drug (represented by the box).