Recursively partitioned mixture model (RPMM) of CpG methylation in GCTs. A. Columns represent methylation class generated by RPMM and rows represent the average methylation within the class at each CpG site. Blue represents methylated and yellow represents unmethylated. The width of the row is proportional to the number of samples included in the methylation class. B. Characteristics of the tumors in each methylation class.