20663896 reads; of these:
  20663896 (100.00%) were paired; of these:
    9102084 (44.05%) aligned concordantly 0 times
    9528980 (46.11%) aligned concordantly exactly 1 time
    2032832 (9.84%) aligned concordantly >1 times
    ----
    9102084 pairs aligned concordantly 0 times; of these:
      1157217 (12.71%) aligned discordantly 1 time
    ----
    7944867 pairs aligned 0 times concordantly or discordantly; of these:
      15889734 mates make up the pairs; of these:
        15178665 (95.52%) aligned 0 times
        359911 (2.27%) aligned exactly 1 time
        351158 (2.21%) aligned >1 times
63.27% overall alignment rate