Box plots of tissue specificity, stratified by best TNS. The distribution of Tau (a measure of tissue specificity), stratified by best associated TNS is shown based on (A) the 61 tissues of the Microarray Atlas, (B) the Duplicate-Free Microarray Atlas, (C) the Six-Tissue RNA-Seq Atlas, and (D) the Six-Tissue Microarray Atlas. The width of each box plot represents the total number of genes with best associated TNS in the given range of TNSs. The whiskers of each boxplot denote the range of the data, the circles mark outliers, and the boxes mark the quartiles above and below the median (center line). These boxplots are notched; when two boxes' notches do not overlap, this is strong evidence of significantly different medians.