ALL of my work is FREELY available on-line through my website = as such it is in the public domain = no license is needed - in providing these products I seek no personal gain - all we ask is that users reference any data and codes they use, and send me feedback based on their experience = pro or con - ALL feedback HELPS. I do this in the hope that we can pool our experience, and improve both data and codes for everyone's use - this activity has been going on for decades and has been highly successful - to everyone's benefit.