One more that just came in, a really thorough tech analysis by a petroleum engineer, with lots of comments appended.

I never knew until reading it that there is a unit of permeability: the Darcy. Our author helpfully explains that 1 Darcy = 1000 millidarcies. Seems to me, as an old Janeite, that the Darcy should be a unit of male eligibility. Given the magnificence of Mr. Darcy’s estates (in Derbyshire! if memory serves), I’d estimate my own eligibility at a couple of millidarcies.