Left reads:
          Input     :  21309554
           Mapped   :  19735190 (92.6% of input)
            of these:   1866771 ( 9.5%) have multiple alignments (132202 have >20)
Right reads:
          Input     :  21309554
           Mapped   :  18094495 (84.9% of input)
            of these:   1684252 ( 9.3%) have multiple alignments (131720 have >20)
88.8% overall read mapping rate.

Aligned pairs:  17757590
     of these:   1640327 ( 9.2%) have multiple alignments
                  517028 ( 2.9%) are discordant alignments
80.9% concordant pair alignment rate.