I'm not sure a line chart is the correct visual for your second plot. You are basically plotting points in a line than setting the y-axis to be their separation from their neighbors. The plot emphasizes outliers and hides points where density is highest.
Content
Your analysis was simple and easy to follow
I'm not sure what the computational aspect of the poster is, since the main analysis could have been done by one person in a day with a slide rule.
Overall design/layout
Visualization
Content