I've thought about this a bit, and the basic concept is valuable - but I'm starting to wonder if a table is the appropriate format. A series of Excel worksheets could probably work, but it loses the "at a glance" convenience of a single central presentation of data (meaning we run the risk of leaving folks just as confused as they are already). Putting everything in one table is something I've mulled over a bit this week (building on some past experience with other charts ), and it gets messier than I'd like in a hurry. I've got an Excel file on my desktop right now in which I started trying to develop the format, and I haven't been satisfied with what I've come up with so far. I haven't given up on finding a useful format yet, but I also wonder if a written form might work just as well or better.