The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Happened as dated, per the source: "The facility was established in 1974, following a series of destructive typhoons."
NIED's own official history page would be the most authoritative source for the institute's founding date matching the pin's stored March 1974 date, though the page content could not be retrieved (domain blocked) to confirm it directly.[1]
NIED's own official facilities page is the primary, authoritative source for its Large-Scale Rainfall Simulator described in the pin, though the page could not be retrieved (domain blocked) to confirm the exact 1974 establishment date.[1]
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.