Research on SVR Water Quality Prediction Model Based on Improved Sparrow Search Algorithm

Table 13

Water quality index of swimming crab culture (mg/L).

Classification	I	II	III	IV	V
Temperature (°C)	25	20/30	15/35	10/40	5/45
pH value	8.0	7.5/8.5	7.0/9.0	6.5/9.5	6.0/10.0
Salinity	28	25/30	20/35	15/40	10/45
Ammonia nitrogen	0	0.5	1.0	1.5	2.0
Dissolved oxygen	≥10.0	≥6.0	≥5.0	≥3.0	≥2.0