You're welcome! Glad I could do this for those who will appreciate it. So, Woodgeek... what do you think about the way the curve is turning? This is unexpected to me, perhaps you can shed some insight into this. You seem to have a much better grasp of the physics and math behind diffusion rates. Am I incorrect in seeing that there seems to be an exponential component to the graph, at least for the middle part of the curve? Now it seems to be almost liner, with a loss of nearly 1/2 ounce of water each day. Ain't supposed to happen that way AFAIK, but the scale disagrees. Your thoughts?