{"station":{"icao":"LTFM","city":{"slug":"istanbul","name":"Istanbul","country":"Türkiye"},"timezone":"Europe/Istanbul","lat":41.01,"lon":28.98,"us":false,"html":"https://weathermarket.io/station/LTFM","json":"https://weathermarket.io/api/station/LTFM","nwsCli":null},"date":"2026-10-06","window":{"date":"2026-10-06","timezone":"Europe/Istanbul","dayStartUtc":"2026-10-05T21:00:00.000Z","dayEndUtc":"2026-10-06T21:00:00.000Z","utcOffsetStart":"+03:00","utcOffsetEnd":"+03:00","hours":24},"complete":true,"values":{"tmax":19,"tmaxAt":"2026-10-06T08:20:00.000Z","tmin":16,"tminAt":"2026-10-05T23:50:00.000Z","tavg":17.4,"humidityMean":71.3,"windMean":4.3,"windMax":6.2,"windMaxAt":"2026-10-06T06:50:00.000Z","precipObservedCount":0,"nObservations":48,"maxGapMinutes":30,"units":{"temperature":"°C","wind":"m/s","humidity":"%"},"source":"Extremes over the METAR observations listed in this record (hourly plus special reports) - the same record values.metarDerived carries in 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Flare - the anchored record is the one to settle on"},"qc":{"summary":{"good":48,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-06T08:20:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-05T23:50:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":19,"tmin":16,"differsFromRecord":false},"note":"Flags are attached beside the anchored record and are not part of its bytes; the record's extremes are unchanged. 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Temperatures are whole degrees Celsius as reported in METAR; a short-lived peak between reports can be missed. This is not a model or an aggregate - every value points at the report that produced it, and every report in the day is listed verbatim.","settlementRule":"The settlement value is the daily maximum (or minimum) of this record once it is final: the local day has ended and the 3-hour correction hold has passed. A day whose longest gap between reports exceeds the station's normal interval plus 30 minutes is final but flagged not settleable - a market should treat it as a review case. Once final, the canonical record bytes are hashed (SHA-256) and the hash is written to the SnapshotAnchor contract on Flare; the anchored record is the settlement record even if reports change afterwards (matchesCurrent then reads false).","verify":["Every METAR in the day is listed with its raw text; compare it with the independent archives linked under links.external (IEM ASOS archive, Ogimet).","GET links.record for the canonical record bytes, SHA-256 them and compare with anchor.sha256; call SnapshotAnchor.isAnchored(sha256) on Flare (anchor.contract, anchor.chainId) to confirm the hash is on-chain. anchor.explorer opens the anchoring transaction.","Permalink pattern for market rules: https://weathermarket.io/station/LTFM/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/LTFM/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the METAR-derived station-day record for LTFM for the contract date (station-local calendar day), as published at https://weathermarket.io/station/LTFM/YYYY-MM-DD with every observation used, the finality status and the Flare anchor of the record. The daily value is the extreme over the hourly and special METAR reports in that day; a short-lived peak between reports may be missed. If the record is not final and settleable by the resolution deadline, the market is flagged for review."},"links":{"html":"https://weathermarket.io/station/LTFM/2026-10-06","json":"https://weathermarket.io/api/station/LTFM/2026-10-06","record":"https://weathermarket.io/api/station/LTFM/2026-10-06?format=record","prev":"https://weathermarket.io/station/LTFM/2026-10-05","next":"https://weathermarket.io/station/LTFM/2026-10-07","station":"https://weathermarket.io/station/LTFM","external":{"iem":"https://mesonet.agron.iastate.edu/cgi-bin/request/asos.py?station=LTFM&data=metar&year1=2026&month1=10&day1=5&year2=2026&month2=10&day2=7&tz=Etc%2FUTC&format=onlycomma&latlon=no&elev=no&missing=M&trace=T&direct=no&report_type=3&report_type=4","ogimet":"https://www.ogimet.com/display_metars2.php?lang=en&lugar=LTFM&tipo=SA&ord=REV&nil=SI&fmt=html&ano=2026&mes=10&day=5&hora=21&anof=2026&mesf=10&dayf=6&horaf=20&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=LTFM"}}}