I agree, but that also is with a grain of salt in that it depends on what conditions the lumber is kept and the type of weather it is enduring, Sticker stacked in an enclosed barn will dry quicker than Sticker stacked and covered with a tarp. A barn with sides and door will dry quicker than an open shed roof. As well as metal barn will dry quicker than a wood barn, Old barn quicker than a new barn (dry dirt beneeth) Barn on bottom of hill will have more moisture than barn atop a hill. A lot of influences going on in the drying process. One year per inch is minimal but a good refference. (each year must include a complete summer)