Definitely clear as mud, but the effort put into it is laudable, regardless.
Maybe you could clear up the methodology a bit by showing the work for a hypothetical player that was ranked 25th at Christmas, 15th in May, and 10th currently?
Mr. Hypothetical would be +15 in that scenario (+10 change +5 change). If he had gone the opposite direction it would be -15. I did it that way because in many cases, guys would lose points and then “recover” them down the stretch, or vice-versa. The decimal points exist because the scores are averages of their rankings. So for example, somebody could gain 20.5 points between Xmas and the end of the season, and then lose 5.5 points in rankings after that, so they would have arrived at their final ranking (out of the 306 players listed) by gaining 15 net points over their pre-Xmas ranking.
To put it yet another way: Dahlin gained .05 points over his Xmas rating, because there were more rankings pre-Xmas that had Svechnikov at #1. He was never not ranked #1 on average, but his average increased by .05, meaning he solidified his #1 ranking by that much. The unseen metric in all of this is the list of actual averages, which I could include if it is helpful. In many, many cases (especially the further down you go in the list), guys’ averages are higher than their rank on the list. So somebody that is at #100 on this list could actually have an average of like 85 “points,” but because there are 15 guys ahead of him with rankings of 84.5, 84.6, 84.7, etc, he falls at #100 on the list.
I feel like I probably just confused you more XD