| Location | Value |
| Tristan Da Cunha | 0.59" |
| Gough Island | 0.55" |
| Cape Saint Lucia | 0.12" |
| Location | Value |
| Gough Island | 0.51" |
| Tristan Da Cunha | 0.43" |
| Location | Value |
| Gough Island | 0.20" |
| Tristan Da Cunha | 0.16" |
| Marion Island | 0.12" |
| Location | Value |
| Gough Island | 0.08" |
| Location | Value |
| Marion Island | 0.39" |
| Tristan Da Cunha | 0.12" |