How to read a ladder
A ladder is one city, one metric (the day's high or low), one settlement date: a set of brackets that cover every temperature, one of which will settle Yes. Each rung shows the bracket's Yes ask as a bar across 0–100c with the midpoint marked, the bid and the ask in cents, and the contracts resting at the ask. A struck-through rung is a bracket the station's confirmed running extreme has already cleared by a full degree: the observation says it cannot settle Yes, and what remains on it is the queue, the Yes asks resting at one cent, plus any stale bid at 3c or better that somebody could still sell into. A rung in green has settled.
Source: the ladder logger (agents/kalshi_ladder_logger.py) writes every read to the database; board_views.sql builds this page's view from the latest read of each bracket in the last six hours. Bids, asks and sizes are Kalshi's own public quotes at the moment of the read; the verdict is computed from the settlement station's hourly observations with the method on the method page.