You don't go from ten shots in ten minutes to ten shots in 5 seconds on the first day.
I don't think I need a "chart" or a book to analyze those targets. You are practicing MISSING. Stop practicing MISSING and start practicing HITTING on target, what you are aiming for or WANT to hit. The more you practice what you want to be good at, the better you'll be and the faster it will happen. Just don't miss, every time you miss, you just practiced missing.
I'm sorry, but this is just terrible advice for people learning to actually shoot fast. There is no way to learn how the gun moves in recoil during rapid fire, how to control it, how to track the sights, etc., without pushing beyond current capabilities.
Now if, like the OP, you reach a point where you are exceeding your capabilities and are not seeing any growth in capabilities, then it's time to take a step back and figure out what specifically might improve outcomes.
But to quote a high national-level USPSA competitor and instructor: "You can't learn to pop a wheelie without skinning some knees."