Zonal Topography is the measure of influence topography would have on a lane based on where you need to play and the adjustment that would need to be made.
Start by reflecting upon how different lane play zones will be more or less influenced by topography on a specific pair. I share two patterns below, one a long sport pattern and the other a short sport pattern. I present the topography of an actual pair of lanes. Imagine playing each pattern on this pair and how topography would impact ball motion differently. Now think of how different phases of lane transition might change this.
Consider what the lane-to-lane differences would be as well as if it was extreme enough to throw two different balls on that pair. How might the phase of transition (fresh, early, middle, late, burn) and topography on each lane influence ball motion?