
I would like to note here, that the edge of the top landing is one step BACK from the protruding brick relief column.
Therfore if this computer image model of PM location is correct, PM is literally at the EDGE of the landing, and coincidentally, the Dr. Pepper bottle was found right there in the RECESS so on the very NEXT lower step from the edge of the landing.
If possible, someone should draw a yellow line to denote in this plan view perspective the actual edge of the top landing.