Left reads:
          Input     :  18517741
           Mapped   :  16067731 (86.8% of input)
            of these:    645783 ( 4.0%) have multiple alignments (58032 have >20)
Right reads:
          Input     :  18517741
           Mapped   :  15662413 (84.6% of input)
            of these:    629946 ( 4.0%) have multiple alignments (58038 have >20)
85.7% overall read mapping rate.

Aligned pairs:  15226282
     of these:    604530 ( 4.0%) have multiple alignments
                  142404 ( 0.9%) are discordant alignments
81.5% concordant pair alignment rate.