[atlas] high v6 user-base, less atlas probes

Hello,

-- sorry for cross-posting

Here is a list of top 20 countries that have a large v6 user-base [*] but are
underrepresented by RIPE Atlas due to less number of deployed dual-stacked
probes. Consider hosting a dual-stacked probe in these regions to help remove
the region-based bias that v6 studies using RIPE Atlas may otherwise have:

Full paper available here: http://goo.gl/hWGveA (§4)

     +----+------------+-----------|
     | CC | v6 Users   | v6 Probes |
|-----+----+------------+-----------|
|  01 | BE | 56.48 %    | 2.82  %   |
|  02 | LU | 35.23 %    | 0.61  %   |
|  03 | GR | 33.66 %    | 1.39  %   |
|  04 | CH | 33.48 %    | 3.82  %   |
|  05 | PT | 29.01 %    | 0.74  %   |
|  06 | IN | 22.25 %    | 0.09  %   |
|  07 | US | 33.00 %    | 13.21 %   |
|  08 | DE | 40.07 %    | 21.25 %   |
|  09 | EC | 18.76 %    | 0.04  %   |
|  10 | JP | 19.69 %    | 1.35  %   |
|  11 | GB | 24.63 %    | 7.00  %   |
|  12 | EE | 16.55 %    | 0.26  %   |
|  13 | CA | 17.83 %    | 1.91  %   |
|  14 | FI | 16.68 %    | 1.39  %   |
|  15 | MY | 14.90 %    | 0.13  %   |
|  16 | IE | 13.22 %    | 0.87  %   |
|  17 | NO | 14.02 %    | 1.83  %   |
|  18 | BR | 12.56 %    | 0.83  %   |
|  19 | AU | 12.76 %    | 1.09  %   |
|-----+----+------------+-----------|

[*] The estimation of number of IPv6 users is taken from APNIC dataset:
   http://labs.apnic.net/dists/v6dcc.html

-- Vaibhav

--------------------------
Vaibhav Bajpai
www.vaibhavbajpai.com

Postdoctoral Researcher
TU Munich, Germany
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