You are right, Stephen.

The ASA triangle is undefined in this set and must be discarded. And a good thing too, it feels wrong.

Just guessing, I think the development time that would fit ASA triangle (suppose Rafal makes a contact step wedge) might be a lot closer to 8 minutes.

The toes on all these curves show what you would draw as dotted lines (to show flare) on a contacted step wedge test set.

Since this test includes flare, it's good to visualize placement of scene values and predicting densities on negative. And it is certainly good enough for process control.

The CI values are not truly what I quoted (they might be "close), and the ASA triangle needs to go.