4372660 + 0 in total (QC-passed reads + QC-failed reads)
0 + 0 duplicates
4372660 + 0 mapped (100.00%:-nan%)
4372660 + 0 paired in sequencing
2231858 + 0 read1
2140802 + 0 read2
1937390 + 0 properly paired (44.31%:-nan%)
4093452 + 0 with itself and mate mapped
279208 + 0 singletons (6.39%:-nan%)
2090376 + 0 with mate mapped to a different chr
0 + 0 with mate mapped to a different chr (mapQ>=5)