HEC-SSP Tutorials and Guides Parametric Modeling Current: Task 10. Fit and Compare Multiple Models to the Winter Season 1-day Precipitation Time Series PDF Download PDF Download page Task 10. Fit and Compare Multiple Models to the Winter Season 1-day Precipitation Time Series. Current page All pages Task 10. Fit and Compare Multiple Models to the Winter Season 1-day Precipitation Time Series Use a season spanning 15Oct through 31Mar to filter the data.Accept a model and estimate quantile information.The GEV | Linear Moments model was chosen and is shown in Figure 1.Continue to Task 11. Fit and Compare Multiple Models to the Spring Season 1-day Precipitation Time Series. ×