21061632 reads; of these:
  21061632 (100.00%) were paired; of these:
    6739149 (32.00%) aligned concordantly 0 times
    11931255 (56.65%) aligned concordantly exactly 1 time
    2391228 (11.35%) aligned concordantly >1 times
    ----
    6739149 pairs aligned concordantly 0 times; of these:
      342322 (5.08%) aligned discordantly 1 time
    ----
    6396827 pairs aligned 0 times concordantly or discordantly; of these:
      12793654 mates make up the pairs; of these:
        9775342 (76.41%) aligned 0 times
        2316442 (18.11%) aligned exactly 1 time
        701870 (5.49%) aligned >1 times
76.79% overall alignment rate