# Method

- Source: Podcast Index feed dump dated 2026-08-16, table `podcasts`, every row.
- Active feed: `newestItemPubdate` between 2026-05-18 and 2026-08-17 (90 days before the dump): 437,693 feeds.
- Length: `newestEnclosureDuration`, the duration in seconds the feed declares for its newest episode. One episode per show.
- Dropped: 12,106 feeds with a duration of 0 or none, 4,039 with more than 6 hours, 51 with a non-numeric value. 421,497 remain.
- Category is `category1`. Language is the first two letters of `language`, lowercased.
- Apple charts: the top 100 shows in 18 Apple Podcasts country charts read on 2026-09-06, joined to the dump on `itunesId`, same active and duration filters.