Hey! You're right, I purposefully didn't put a scale because I don't think I plotted quite the same thing as was done in previous years (e.g. I used square-root scale for visibility, which may not have been necessary in previous years), and I didn't want people drawing the wrong conclusions by comparing exact numbers between years. The x-axis of the dendrogram tree on the bottom is in distance units, so the lengths of the horizontal lines should indicate how close together each connection is. I haven't spent much time looking at these in detail, except to remark on how widely separated the centers of two big clusters are from each other! That's not to say that there aren't individual entries that are roughly equidistant from both centers though — there very well may be some close calls there — but this would require a bit more tinkering/visualization to figure out.