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The median value of alpha from CERN to Europe is 32.55 (km/ms). The IQR is 11.61 km/ms or IQR/Median~ 36% or ~ +-18%. The maximum value for alpha is 87.55 Km/ms (CERN to EPFL) which is because CERN and EPFL are only about 100 km away from each other, so selecting the highest value of alpha in this case may be mis-leading.
Below is the graph for Min RTT vs distance from CERN to European countries. We can see that that alpha does not change much with distance.
The graph below shows the alpha distribution as seen from England to European countries.
The median value of alpha from England(Warrington) to Europe is 40.71 (km/ms). The IQR is 15.6 (km/ms) or IQR/Median~ 38% or ~ +-19%. The highest value of alpha 97.72 (km/ms) is due to a very small RTT (2.6ms) between (demon.co.uk) and this landmark which are 263 km apart.
The graph below shows the alpha distribution as seen from Italy to other European countries.
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demon.co.uk |
Conclusion
References
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