Differencing of Sta-14 Bump and Sta-18 Flipped-Sign Bump

Above I show the positive and negative bump scan patterns.  Problem is, in creating the `negative' bump actuator configuration file, I made a mistake: specifically, I neglected to negate the bumps in the third row from the top.  So, in the subtraction, that row's bumps should all disappear.  The gridded version of the differencing is shown below. (NB, I've done a division by two, i.e., (Sta-14 minus Sta-18)/2.)

And here is shown the Kuwahara-filtered image:

We see a similar pattern in Chris's NRAO7.png image: