Engine Wash Analytics allows two ways to organize and filter data across the pages: Groups and Filters. A Group is a selection of high-level global filters specifying a collection of engines for which wash event data will be summarized and analyzed (Engine Family, Engine Model, etc.). Groups are helpful when you need to report on select engine models and/or customer level wash results on a regular basis, and can be selected, or deselected on the top of each page. Once a group is created, it is persisted across user sessions and avoids the need to recreate them each time you use the application. Filters are available on all pages by clicking the button in the top right. Filter selections are flexible and useful for more detailed data refinement. Filter options are specific to each page in EWA, and provide additional options (e.g., wash type, date timeframes, engine serial numbers, etc.) for limiting the data, not available in Groups.