20949758 reads; of these:
  20949758 (100.00%) were paired; of these:
    4185030 (19.98%) aligned concordantly 0 times
    16126928 (76.98%) aligned concordantly exactly 1 time
    637800 (3.04%) aligned concordantly >1 times
    ----
    4185030 pairs aligned concordantly 0 times; of these:
      173177 (4.14%) aligned discordantly 1 time
    ----
    4011853 pairs aligned 0 times concordantly or discordantly; of these:
      8023706 mates make up the pairs; of these:
        6103616 (76.07%) aligned 0 times
        1757482 (21.90%) aligned exactly 1 time
        162608 (2.03%) aligned >1 times
85.43% overall alignment rate