One would assume you are diving a CCR, or at least considering one.

Close as you will get is some of the software that will allow you to cut
your own tables, with gradients to adjust as you see fit.

Other than that, get ahold of Bill Hamilton.

Ross Hemingway has an excellent program based upon VPM:

http://www.hhssoftware.com/v-planner/download.html

Kees Hofwegens superb GAP uses RGBM:

http://www.gap-software.com/

I also have an old copy of ZPlan, and if you e-mail me, and ask nice, I will
ping you a copy. It is Buhlman based.

All these makes tables within minutes of each other, the difference is in
how you do or don't understand the variables.

Do yourself a favor and get ahold of Randy Milak. He can give you a lot of
insight into what you are asking/doing.

Or, you can ping my boss and ask him, he forgot more about diving CCR's than
most will ever know.

www.customrebreathers.com

Scott

It's been discussed to death already... Check it out with google... Now,
back to the important stuff... Politics, firearms, and sex...

no