Comparison with measured abundance using Classic and Signature data from Arabidopsis. Plots compare the measured abundance using Classic and Signature data from Arabisopsis. In Plot A, all data points in the scatter-plot represent mean values of 21608 genes from Classic Data and Signature Data of five experiments measuring the same sample. The red line is the middle line (x = y) and the blue line is calculated by total least squares. In Plots B-E, genes are selected with log2 (tag-position) in the ranges [4 6], [6 8], [8 10] and [10 12], with 3417, 10005, 8037 and 149 genes in each range respectively.