18256141 reads; of these:
  18256141 (100.00%) were paired; of these:
    4445789 (24.35%) aligned concordantly 0 times
    13321094 (72.97%) aligned concordantly exactly 1 time
    489258 (2.68%) aligned concordantly >1 times
    ----
    4445789 pairs aligned concordantly 0 times; of these:
      136989 (3.08%) aligned discordantly 1 time
    ----
    4308800 pairs aligned 0 times concordantly or discordantly; of these:
      8617600 mates make up the pairs; of these:
        6603960 (76.63%) aligned 0 times
        1770367 (20.54%) aligned exactly 1 time
        243273 (2.82%) aligned >1 times
81.91% overall alignment rate