I'm not entirely certain as the Japanese is all Greek to me, but I imagine the 1.000 on the vertical graph could represent the diameter of the Airy disk. All colours are within that diameter on the DZ, and just one colour barely outside on the DL. I doubt this would be visible visually, and I haven't found a similar graph so far for the FS. Of course I could be wrong!
1.000 means edge of the lens, 50% of diameter from the center. There is no the other half plotted from -1.000 to 0.000.
0.000 means center of the lens. In fact the graph is simetrical so you can sometimes find it as 0 to 100% too. X axis means the “defocusing” of the given wavelenght ray.