Left reads:
          Input     :  21126120
           Mapped   :  19891154 (94.2% of input)
            of these:   1583028 ( 8.0%) have multiple alignments (66962 have >20)
Right reads:
          Input     :  21126120
           Mapped   :  18865192 (89.3% of input)
            of these:   1478891 ( 7.8%) have multiple alignments (66586 have >20)
91.7% overall read mapping rate.

Aligned pairs:  18570065
     of these:   1444932 ( 7.8%) have multiple alignments
                  404968 ( 2.2%) are discordant alignments
86.0% concordant pair alignment rate.