| Letter | Rating | City | % Correct |
|---|---|---|---|
| L | Alpha ++ | London | 94%
|
| N | Alpha ++ | New York | 92%
|
| M | Alpha | Madrid / Mexico City / Milan / Moscow / Mumbai | 88%
|
| B | Alpha + | Beijing | 84%
|
| P | Alpha + | Paris | 82%
|
| S | Alpha + | Shanghai / Singapore | 82%
|
| T | Alpha + | Tokyo | 81%
|
| D | Alpha + | Dubai | 74%
|
| A | Alpha | Amsterdam | 69%
|
| I | Alpha - | Istanbul | 64%
|
| J | Alpha | Jakarta | 62%
|
| X | Beta - | Xiamen / Xi'an | 62%
|
| C | Alpha | Chicago | 61%
|
| G | Alpha - | Guangzhou | 55%
|
| F | Alpha | Frankfurt | 52%
|
| H | Alpha + | Hong Kong | 52%
|
| K | Alpha | Kuala Lumpur | 44%
|
| R | Alpha - | Riyadh | 39%
|
| W | Alpha - | Warsaw | 39%
|
| E | Beta - | Edinburgh | 38%
|
| Z | Alpha - | Zurich | 38%
|
| U | High Sufficiency | Ulaanbaatar | 34%
|
| Y | High Sufficiency | Yangon / Yerevan | 34%
|
| O | Beta | Oslo | 32%
|
| V | Alpha - | Vienna | 32%
|
| Q | Beta - | Quito | 30%
|