The 2005 paper A comparison of the human and chimpanzee olfactory receptor gene repertoires describes a poisson distribution, with a mean of 0.701
From that mean, how is the gene disruption rate of 1kb per year calculated? And, how is the age 3.86 Ma for relaxation of selective constraint calculated from (0.451/0.701)·6 Mya = 3.86 Mya?
The parts of the paper,
TL;DR How is mean = 0.701 used to calculate stuff in that paper?