The 3D TraceRoutes and Ping Plotter do this exactly. The data is already provided in the screenshots above. The problem begins at the first hop after my gateway (hop 2 in the graphs).
For modem logs, they show 2 things from time to time
• MTA PROV: Failed (almost daily)
• No Ranging Response received - T3 time-out (once every 3-4 days at most)
I have only had the T3 time-out coincide once with when I'm having the problems. The MTA PROV has to do with my modem being VOIP enabled. I do not have VOIP through Comcast so this is of no consequence.