| Cloud type | Empirical relations | R Square |
| HI cloud | TOC = 120.03273 + 5.38231 × HI cloud | 0.0568 |
| MI cloud | TOC = 404.45585 − 3.33758 × MI cloud | 0.9409 |
| LO cloud | TOC = −40.10288 + 5.79593 × LO cloud | 0.9556 |