21440 reads; of these:
  21440 (100.00%) were paired; of these:
    20917 (97.56%) aligned concordantly 0 times
    502 (2.34%) aligned concordantly exactly 1 time
    21 (0.10%) aligned concordantly >1 times
    ----
    20917 pairs aligned concordantly 0 times; of these:
      677 (3.24%) aligned discordantly 1 time
    ----
    20240 pairs aligned 0 times concordantly or discordantly; of these:
      40480 mates make up the pairs; of these:
        35849 (88.56%) aligned 0 times
        4065 (10.04%) aligned exactly 1 time
        566 (1.40%) aligned >1 times
16.40% overall alignment rate