Statistics of optimal coverings.

For each of the six tissues, this table provides basic information about the optimal coverings at all levels: STP, source with target, target with source. For instance, for breast cancer, there are 4,026 candidate STPs after both filters (rejecting source-target independence and 2% tissue sample frequency); the minimal covering size is 67 STPs; at least one of these 67 STPs is aberrant in 95.4% of the breast cancer samples; and there are 21 STPs which appear in every minimal covering.