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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.
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