I'm trying to graph the average shear stress in a smooth line as shown in the left graph in the image, but the graph needs to be shear stress x distance, not iterations, like the graph on the right in the image. How do I average the data to get a smoother graph?

I think there are some things I'm not understanding about how solidworks performs flow simulations. For the Iterations graph, why does it take ~80 iterations for the data to level out? And why does my stress at each distance graph report such different numbers at each distance point? I'd say it was due to eddy currents but the flow trajectory views don't show anything but nearly perfect laminar flow