| J | F | M | A | M | J | J | A | S | O | N | D | Country | Locality |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 111 | 111 | Alaska | certain lakes in northern Alaska | ||||||||||
| 111 | 111 | Canada | Great Bear Lake | ||||||||||
| 111 | 111 | 111 | France | High altitude lakes | |||||||||
| 111 | 111 | 111 | France | Lake Leman | |||||||||
| 111 | 111 | 111 | 111 | 111 | Not specified | ||||||||
| 111 | 111 | 111 | not specified | ||||||||||
| 111 | USA | southern parts of the range | |||||||||||
| 111 | 111 | 111 | Canada | throughout the range |