Presumably Insert size, but is undocumented. Per samtools source, is measured 5' to 5' https://github.com/samtools/samtools/blob/bd1a409aa750d25d70a093405d174db8709a3f2c/bam_mate.c#L320
See Implementation
Presumably Insert size, but is undocumented. Per samtools source, is measured 5' to 5' https://github.com/samtools/samtools/blob/bd1a409aa750d25d70a093405d174db8709a3f2c/bam_mate.c#L320