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Here is the data seen from CERN_Switzerland.
There is a very strong co-relation between the Min RTT and distances (R2 ~= 0.77) from CERN to European countries. The value of Alpha from Line equation is 33.44 (Km/ms).
Below is the graph of Min RTT and distances as seen from England to European countries
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There is a very strong co-relation between Min RTT and distances as seen from England to other European countries (R2 > 0.85 ). The value of alpha from line equation is 41.66(km/ms). Norway in this graph have aberrant results the reason for this is that it fallow a longer distance than Great Circle Distance. The traceroute result shows that it goes through Denmark.
Below is the graph of Min RTT and distances as seen from ICTP_Italy.
There is no strong co-relation between Min RTT and distances in this case( R2 =0.4). This is because some of the routes (Balkans region) are very indirect. The value of alpha from line equation is 20.74 (km/ms).
Conclusion
References
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\[1\] A region may be different then a geographical region |