To look at data specific to a particular season, you can manually choose a custom ‘New In’ date range from the date & timeline filter to see products which were tracked for the first time within the specified length of time.
EDITED determines a product’s season by the date the product was initially tracked as New In. If a product appears to have a seasonal tag that contradicts what you would expect, this is likely due to the ‘New In’ date being impacted by a change in the data structure that caused a new product record to be generated. (i.e. the retailer changed the way they list product IDs, resulting in “new” product cards; or a previous issue with a broken tracker was resolved, so any products launched during the down period would be picked up as ‘New In’ upon the tracker’s recovery).