Here's what I see....
A good way to get a sense of how things have gotten better is to reduce the "zoom" on his spreadsheet so you can really see the numbers, just the colors.
At the top of the spreadsheet, there's a awful lot of RED. And the doses were 3 to 4 times higher than they are right now. Now scroll down towards the bottom. Notice how pink and yellow it gets? And on much lower doses.
That says "things are better". What I like is that he's seeing curves that are shaped like a smile. Sure, sometimes it's more the shape of a smirk than a big grin, and sometimes one corner of the "mouth" is higher or lower than the other (like Elvis!), but for the most part, you have "up" on the ends, and "down" in the middle. That's what they're supposed to look like.
Better?
Carl