Saturation height function

[swibow]

Go to Lambda tab, change constants in cells T7-T12 to 1.0 (something different from the current fit)

Tools - Solver
Set target cell - T14
Equal to: min
By changing cells: T7:T12
Solve

That's it?? That easy?
Thanks thanks thanks .....Vinomarky. I learn a lot from you today.