21263712 reads; of these:
  21263712 (100.00%) were paired; of these:
    4125417 (19.40%) aligned concordantly 0 times
    16483434 (77.52%) aligned concordantly exactly 1 time
    654861 (3.08%) aligned concordantly >1 times
    ----
    4125417 pairs aligned concordantly 0 times; of these:
      175507 (4.25%) aligned discordantly 1 time
    ----
    3949910 pairs aligned 0 times concordantly or discordantly; of these:
      7899820 mates make up the pairs; of these:
        5777732 (73.14%) aligned 0 times
        1982724 (25.10%) aligned exactly 1 time
        139364 (1.76%) aligned >1 times
86.41% overall alignment rate