Compression due to PPCs.

and denote error model parameter and the order of the PPCs, respectively. ICR stands for inverse compression ratio. Mean Len. describes the typical segment length in the PPCs. For reference, mean lengths in uncompressed signals are and for the low and high coverage density signals. r/nt stands for reads per nucleotide. Note: since the PPC algorithm is stochastic, values may vary from signal to signal and from one run to another.