20548191 reads; of these:
  20548191 (100.00%) were paired; of these:
    4550990 (22.15%) aligned concordantly 0 times
    15373427 (74.82%) aligned concordantly exactly 1 time
    623774 (3.04%) aligned concordantly >1 times
    ----
    4550990 pairs aligned concordantly 0 times; of these:
      107989 (2.37%) aligned discordantly 1 time
    ----
    4443001 pairs aligned 0 times concordantly or discordantly; of these:
      8886002 mates make up the pairs; of these:
        6627784 (74.59%) aligned 0 times
        2053006 (23.10%) aligned exactly 1 time
        205212 (2.31%) aligned >1 times
83.87% overall alignment rate