| Correlation based similarity measures-Summary Recent countries visiting this post |  |
 | 44 | United States |
 | 29 | |
 | 10 | China |
 | 5 | Spain |
 | 4 | Germany |
 | 3 | Pakistan |
 | 3 | United Kingdom |
 | 2 | France |
 | 2 | India |
 | 1 | Europe |
 | 1 | Iran, Islamic Republic of |
 | 1 | Brazil |
 | 1 | Italy |
 | 1 | Taiwan |
 | 1 | Netherlands |
 | 1 | Czech Republic |