LOL! I zoomed a little. However, I try to keep it around 3.6 ms depth for comparison purposes with other cans that have more problematic CSDs.
Also, not all measurements show notches around the high mids area, but many do seem to have that problem. About 5 to 6 kHz seems to correspond to about 1.3 to 1.1 inches (half wavelength), which is close to the depth of some cups, and may indicate the presence of standing waves. There could also be driver limitations.