Shroom Yield After Dried?

Can any experienced shroom grower let me know how much shroom weight go down from wet weight. I have heard 10 to 1, 15 to 1. Anybody? Lets say you have a 1 oz of wet shrooms any guesses on what the wet weight will be?

oz wet ~ 3 gs
mushrooms are mostly water so onced dried they lose around 90% of their weight when wet