Left reads:
          Input     :  21582658
           Mapped   :  20456195 (94.8% of input)
            of these:   1668786 ( 8.2%) have multiple alignments (46212 have >20)
Right reads:
          Input     :  21582658
           Mapped   :  18895608 (87.5% of input)
            of these:   1506389 ( 8.0%) have multiple alignments (45734 have >20)
91.2% overall read mapping rate.

Aligned pairs:  18570881
     of these:   1463856 ( 7.9%) have multiple alignments
                  416666 ( 2.2%) are discordant alignments
84.1% concordant pair alignment rate.