21332723 reads; of these:
  21332723 (100.00%) were paired; of these:
    5344698 (25.05%) aligned concordantly 0 times
    15465758 (72.50%) aligned concordantly exactly 1 time
    522267 (2.45%) aligned concordantly >1 times
    ----
    5344698 pairs aligned concordantly 0 times; of these:
      42221 (0.79%) aligned discordantly 1 time
    ----
    5302477 pairs aligned 0 times concordantly or discordantly; of these:
      10604954 mates make up the pairs; of these:
        8302001 (78.28%) aligned 0 times
        2155684 (20.33%) aligned exactly 1 time
        147269 (1.39%) aligned >1 times
80.54% overall alignment rate