Table 1.

AMBI values and relative water body classification. Key: AZTI’s Marine Biotic Index (AMBI).

AMBI Values	Water Body Classification
0 < AMBI ≤ 1.2	High
1.2 < AMBI ≤ 3.3	Good
3.3 < AMBI ≤ 4.3	Moderate
4.3 < AMBI ≤ 5.5	Poor
5.5 < AMBI ≤ 7	Bad