| Location | Value |
| Marion Island | 0.12" |
| Tristan Da Cunha | 0.12" |
| Cape Point | 0.08" |
| Ocean View | 0.04" |
| Slangkop | 0.04" |
| Location | Value |
| Port St Johns | 0.04" |
| Location | Value |
| Port St Johns | 0.04" |
| Location | Value |
| Gough Island | 0.51" |
| Marion Island | 0.39" |
| Tristan Da Cunha | 0.35" |
| Location | Value |
| Marion Island | 0.08" |