Left reads:
          Input     :  21582658
           Mapped   :  20456195 (94.8% of input)
            of these:   1834622 ( 9.0%) have multiple alignments (112400 have >20)
Right reads:
          Input     :  21582658
           Mapped   :  18895608 (87.5% of input)
            of these:   1672225 ( 8.8%) have multiple alignments (111922 have >20)
91.2% overall read mapping rate.

Aligned pairs:  18570881
     of these:   1629692 ( 8.8%) have multiple alignments
                  477592 ( 2.6%) are discordant alignments
83.8% concordant pair alignment rate.