21462348 reads; of these:
  21462348 (100.00%) were paired; of these:
    8782651 (40.92%) aligned concordantly 0 times
    12317179 (57.39%) aligned concordantly exactly 1 time
    362518 (1.69%) aligned concordantly >1 times
    ----
    8782651 pairs aligned concordantly 0 times; of these:
      31527 (0.36%) aligned discordantly 1 time
    ----
    8751124 pairs aligned 0 times concordantly or discordantly; of these:
      17502248 mates make up the pairs; of these:
        15717932 (89.81%) aligned 0 times
        1679589 (9.60%) aligned exactly 1 time
        104727 (0.60%) aligned >1 times
63.38% overall alignment rate