20895303 reads; of these:
  20895303 (100.00%) were paired; of these:
    3658177 (17.51%) aligned concordantly 0 times
    16530413 (79.11%) aligned concordantly exactly 1 time
    706713 (3.38%) aligned concordantly >1 times
    ----
    3658177 pairs aligned concordantly 0 times; of these:
      164583 (4.50%) aligned discordantly 1 time
    ----
    3493594 pairs aligned 0 times concordantly or discordantly; of these:
      6987188 mates make up the pairs; of these:
        5207690 (74.53%) aligned 0 times
        1641765 (23.50%) aligned exactly 1 time
        137733 (1.97%) aligned >1 times
87.54% overall alignment rate