One more graph from me.
I'm puzzled by the varying scale of the x-axis in these individual graphs and the implied position of the 0dB point. I'd assumed it was supposed to be indicated by the very slightly thicker/darker gray line, but here the labeling certainly makes it look like that's +2dB and that the 6kHz peak is at or above +4dB.
Poor printing? Poor interpretation on my part? These graphs were not, apparently, "crafted for perfection."