Table 9 RMSE values 1 and up to 6 months ahead of all the models employed in the present study.

From: Evolution and forecasting of PM10 concentration at the Port of Gijon (Spain)

Model and variables number

RMSE

One month ahead

Up to 6 months ahead

ARIMA

6.3162

7.6312

VARMA (p = 4 q = 2) 4 variables

10.1021

11.4189

VARMA (p = 4 q = 1) 4 variables

10.5529

11.7214

VARMA (p = 2 q = 1) 4 variables

10.6211

11.7832

VARMA (p = 1 q = 2) 4 variables

10.7767

11.8007

VARMA (p = 4 q = 2) 6 variables

8.5767

10.8202

VARMA (p = 4 q = 1) 6 variables

9.2802

11.0743

VARMA (p = 2 q = 1) 6 variables

9.5173

11.4786

VARMA (p = 1 q = 2) 6 variables

9.7252

11.9347

MLP 4 variables

4.6209

6.2661

MLP 6 variables

4.3402

6.0873

SVMR 4 variables

4.9249

6.1191

SVMR 6 variables

4.2649

6.1010

MARS 4 variables

8.2575

8.7319

MARS 6 variables

6.7605

6.8725