18791435 reads; of these:
  18791435 (100.00%) were paired; of these:
    3351298 (17.83%) aligned concordantly 0 times
    14818817 (78.86%) aligned concordantly exactly 1 time
    621320 (3.31%) aligned concordantly >1 times
    ----
    3351298 pairs aligned concordantly 0 times; of these:
      104180 (3.11%) aligned discordantly 1 time
    ----
    3247118 pairs aligned 0 times concordantly or discordantly; of these:
      6494236 mates make up the pairs; of these:
        4659463 (71.75%) aligned 0 times
        1736152 (26.73%) aligned exactly 1 time
        98621 (1.52%) aligned >1 times
87.60% overall alignment rate