| Seasonality | Trend |
---|
Model1 | None | None |
Model2 | None | Linear |
Model3 | None | Quadratic |
Model4-1 | Fluctuating cycle | None |
Model4-2 | Fixed cycle | None |
Model5-1 | Fluctuating cycle | Linear |
Model5-2 | Fixed cycle | Linear |
Model6-1 | Fluctuating cycle | Quadratic |
Model6-2 | Fixed cycle | Quadratic |
- Models were classified according to nine categories based on the combination of seasonality and trend. For seasonality, models were constructed using dummy variables. Fluctuating cycle means that the seasonal component changes, and fixed cycle means that the seasonal component is fixed. For trends, we considered linear trends and quadratic trends