One row is one taker order: every fill a wallet’s order got in the same instant, added up. Newest 100 at this size; the list refreshes every 10 seconds, and new orders light up as they land.

Changes in position size between two polls of the same wallet: every 5 minutes on the crypto markets, every 15 on trade.xyz. valued at the latest price, so price moves alone never count. Over the last 2 hours.