TI | Chl | P | SD | Trophic Class |
<30 - 40 | 0 - 2.6 | 0 - 12 | >8 - 4 | Oligotrophic |
40 - 50 | 2.6 - 20 | 12 - 24 | 4 - 2 | Mesotrophic |
50 - 70 | 20 - 56 | 24 - 96 | 2 - 0.5 | Eutrophic |
70 - 100+ | 56 - 155+ | 96 - 384+ | 0.5 ≤ 0.25 | Hypereutrophic |