Left reads:
          Input     :  31450950
           Mapped   :  30468965 (96.9% of input)
            of these:   4352716 (14.3%) have multiple alignments (823142 have >20)
Right reads:
          Input     :  31450950
           Mapped   :  30085683 (95.7% of input)
            of these:   4298496 (14.3%) have multiple alignments (820625 have >20)
96.3% overall read mapping rate.

Aligned pairs:  29542852
     of these:   4220260 (14.3%) have multiple alignments
                  169974 ( 0.6%) are discordant alignments
93.4% concordant pair alignment rate.