20798136 reads; of these:
  20798136 (100.00%) were paired; of these:
    6252786 (30.06%) aligned concordantly 0 times
    14139359 (67.98%) aligned concordantly exactly 1 time
    405991 (1.95%) aligned concordantly >1 times
    ----
    6252786 pairs aligned concordantly 0 times; of these:
      44850 (0.72%) aligned discordantly 1 time
    ----
    6207936 pairs aligned 0 times concordantly or discordantly; of these:
      12415872 mates make up the pairs; of these:
        10434495 (84.04%) aligned 0 times
        1874761 (15.10%) aligned exactly 1 time
        106616 (0.86%) aligned >1 times
74.91% overall alignment rate