I was asking why earthquake aftershocks should preferentially appear at 103 degrees.

Maybe you're asking for an explanation of the P-wave shadow zone? The link shows why the shadow zone is where it is.

There's no reason I can think of for triggered earthquakes to cluster on the sides of the P-wave shadow zone, so I simply can't explain that folklore to you.

If your logic is that you hear something different than I hear (and my hearing is unusually good across the spectrum), and scientists tell you something different than they tell you (and I spend most of my working hours with scientists, and they've told me some very strange ideas), then the usual scientific method of gathering some evidence and discussing isn't going to work very well.

• P wave shadow zone