Table 7.

Accuracy analysis of water temperature, pH, DO, and EC, and salinity levels for post-calibration.

Items	Reference	Accuracy Analysis
		Difference Range	MAE	RMSE
Temperature sensor	HEL-711 RTD	−0.10–0.10 °C	0.0339 °C	0.0417 °C
pH sensor	pH 6.86 buffer solution	−0.23–0.15	0.0603	0.0738
DO sensor	FOPTOD ODO	−0.10–0.10 mg/L	0.0329 mg/L	0.401 mg/L
EC sensor	1413 μS/cm conductivity solution	−0.19–0.17 mS/cm	0.0574 mS/cm	0.0698 mS/cm
Salinity estimation	Vernier Salinity Sensor	−10–10 ppm	2.9743 ppm	3.6078 ppm