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| 57 | ||
| 26 | ||
| 16 | ||
| 10 | ||
| 8 | ||
| 7 | ||
| 6 | ||
| 6 | ||
| 6 | ||
| 5 | ||
| 4 | ||
| 3 | ||
| 3 | ||
| 3 | ||
| 3 | ||
| 1 |
| 4 | ||
| 3 | ||
| 3 |
| 6 | 2 | 12 | 6 | 5 | 4 | 6 | 4 | 5 | 5 | 2 |
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| SPRING | 20 | |
| SUMMER | 15 | |
| FALL | 14 | |
| WINTER | 8 |
| United States | 23 | |
| United Kingdom | 4 | |
| Canada | 3 | |
| Iceland | 2 | |
| Antarctica | 1 | |
| Egypt | 1 | |
| Kiribati | 1 |
Observations From Members