How many pounds of muscle do I have?

Okay so if someone knows their body fat percentage (hydrostatic weighing), weight, and height is it really possible to figure how many pounds of muscle that person has? I have googled this quite extensively and not come up with anything. I know all the formulas for figuring lean body m but I'm interested in the muscle m number. Lean body m also includes: skin, bones, bodily fluids, etc. There's probably no way to figure this without professional testing but I figure I'd ask. If a girl is 5'5, 125 lbs at 16% body fat, any idea how many pounds of muscle she has? TIA!