| Water Mass | Temperature (˚C) | Salinity (g/L) |
| SACW | T < 18 | S < 36 |
| SACW/COASTAL | 18 < T < 20 | 35 < S < 36 |
| COASTAL | T > 20 | S < 35.4 |
| SACW/TROPICAL | 18 < T < 20 | S > 36 |
| COASTAL/TROPICAL | T > 20 | 35,4 < S < 36 |
| TROPICAL | T > 20 | S > 36 |