Table 3.

The error evaluation metrics for the 10-fold cross validation, including the root mean square error (RMSE), mean absolute error (MAE), and adjusted R squared.

Evaluation Metrics	Water Temperature (°C)	Nitrate (μmol/L)	Phosphate (μmol/L)
RMSE	2.04	2.79	0.22
MAE	1.41	1.84	0.14
$R_{adj}^2$	0.93	0.97	0.96