Left reads:
          Input     :  20319811
           Mapped   :  19244805 (94.7% of input)
            of these:   1497926 ( 7.8%) have multiple alignments (75723 have >20)
Right reads:
          Input     :  20319811
           Mapped   :  18549085 (91.3% of input)
            of these:   1428553 ( 7.7%) have multiple alignments (75455 have >20)
93.0% overall read mapping rate.

Aligned pairs:  18232816
     of these:   1389404 ( 7.6%) have multiple alignments
                  317472 ( 1.7%) are discordant alignments
88.2% concordant pair alignment rate.