20949758 reads; of these:
  20949758 (100.00%) were paired; of these:
    4395677 (20.98%) aligned concordantly 0 times
    15968146 (76.22%) aligned concordantly exactly 1 time
    585935 (2.80%) aligned concordantly >1 times
    ----
    4395677 pairs aligned concordantly 0 times; of these:
      170284 (3.87%) aligned discordantly 1 time
    ----
    4225393 pairs aligned 0 times concordantly or discordantly; of these:
      8450786 mates make up the pairs; of these:
        6418245 (75.95%) aligned 0 times
        1895386 (22.43%) aligned exactly 1 time
        137155 (1.62%) aligned >1 times
84.68% overall alignment rate