The logic of the change is simple, increases in the area to the bottom right, say, the last two columns by 3000 rpm and up.
sorry, but I made confusion with another response to another user, and I replied to you instead of him.
The strange thing in this map, and that has the high value to the point "100 the load 0 rpm", then has been reduced as we increase the rpm. the first settler of the load 10%-15% of the values are negative or zero. also if the revs are high or low.