Just some figures from last lake event. Roc recieved .28 liquid and recieved 7.4 inches. Thats about 25 to 1 ratio. I have seen higher than that in tea kettle set ups. 30 to 1 or more. Pure air. Can literally blow off 3 or 4 inches from car. It can also be 0 out and any sun at all it evaporates. Doesn't melt just sublimates.