Aha!
JacobH, you get the prize - the chart I was referring to was the one on 'theportman' site, which I notice was last updated around 2000/2001. Have to say this chart was *very* helpful to me around that time in understanding the relative quality of different years (which were better across all shippers) and relative quality of shippers (which were better across all years) etc. It was the only real information on relative quality across the years/shippers I could find back then, rather than just the list of declared years, or sellers info (where every port is 'marvellous'!). For a while as I tried various ports to see what I liked I created my own version in Excel to compare my scores vs those from that table and WS or other score, for interest. Adding bottle price into the equation then creates the 'sweet spot' for selection on a budget
DRT, your thread looks like you are well on track to producing a more comprehensive version of the same kind of thing; I'd strongly suggest web posting of it when you do, as I know how invaluable such information was to me when I was initially learning about the different VPs, and while sections like the tasting notes on this forum seem excellent for experienced port drinkers, I think that kind of table is ideal for encouraging people to try good port and people starting out with VP. I'd make one suggestion; In addition to your table showing the declared years, you've mentioned potentially including scores or similar - I think this is where the real value is, whether a literal score or some form of simple grading (e.g. colours of sun from blue to red or whatever).
Phil.