21549314 reads; of these:
  21549314 (100.00%) were paired; of these:
    4073707 (18.90%) aligned concordantly 0 times
    16792754 (77.93%) aligned concordantly exactly 1 time
    682853 (3.17%) aligned concordantly >1 times
    ----
    4073707 pairs aligned concordantly 0 times; of these:
      169702 (4.17%) aligned discordantly 1 time
    ----
    3904005 pairs aligned 0 times concordantly or discordantly; of these:
      7808010 mates make up the pairs; of these:
        5920392 (75.82%) aligned 0 times
        1753126 (22.45%) aligned exactly 1 time
        134492 (1.72%) aligned >1 times
86.26% overall alignment rate