"Jim" ... I like your analogy, " a coiled spring". I must admit your previous post on TERN was somewhat disappointing to me but, thankfully, your further due diligence proved much better. I thought I might have to curb my enthusiasm some but not now. I'm really liking the development of this chart.

 

I'm going to be doing a case study on the technical board on TERN so keep an eye open and thanks again for your valued science and personal input.