Figure 3

The mean and variance of beta values of CpG probes near transcription start sites depend on the gene’s expression level. Mean (A) and standard deviation (B) of type II CpG probes with respect to their position relative to TSSs of annotated genes. Each green dot corresponds to a CpG probe, and the four lines show the running median for probes based on the quartile of the expression level (from RNA-seq in four individuals) of the gene they are associated with.