Comment by therealchiggs

I'm curious if you have a theory or explanation as to why some pings appear to be asymmetric. For example for the following cities, it seems West->East is often faster than East->West:

                Chicago         London         New York
  Chicago       —               105.73ms       21.273ms
  London        108.227ms       —              72.925ms
  New York      21.598ms        73.282ms       —