{"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":"2026-10-12","window":{"date":"2026-10-12","timezone":"Europe/Istanbul","dayStartUtc":"2026-10-11T21:00:00.000Z","dayEndUtc":"2026-10-12T21:00:00.000Z","utcOffsetStart":"+03:00","utcOffsetEnd":"+03:00","hours":24},"complete":true,"values":{"tmax":23,"tmaxAt":"2026-10-12T08:20:00.000Z","tmin":16,"tminAt":"2026-10-12T02:50:00.000Z","tavg":19.4,"humidityMean":71.4,"windMean":3.1,"windMax":5.7,"windMaxAt":"2026-10-12T10:50:00.000Z","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 /api/station/{icao}/daily"},"extremes":{"tmax":{"obsTimeUtc":"2026-10-12T08:20:00.000Z","obsTimeLocal":"2026-10-12T11:20:00+03:00","metarType":"METAR","raw":"METAR LTFM 120820Z 35004KT 290V030 CAVOK 23/12 Q1012 NOSIG RMK RWY17L 31004KT 260V010 RWY34L 32004KT 260V020 RWY16R 35004KT 300V020 RWY36 35003KT 260V050 RWY18 32005G20KT 280V090","temp":23,"dewpoint":12,"humidity":50,"wind":2.1,"precipObserved":false,"correctedAt":"2026-10-12T09:38:38.451Z","originalRaw":"METAR LTFM 120820Z 35004KT 290V030 CAVOK 23/12 Q1012 NOSIG"},"tmin":{"obsTimeUtc":"2026-10-12T02:50:00.000Z","obsTimeLocal":"2026-10-12T05:50:00+03:00","metarType":"METAR","raw":"METAR LTFM 120250Z 17003KT 140V200 CAVOK 16/10 Q1010 NOSIG","temp":16,"dewpoint":10,"humidity":68,"wind":1.5,"precipObserved":false,"correctedAt":null,"originalRaw":null},"windMax":{"obsTimeUtc":"2026-10-12T10:50:00.000Z","obsTimeLocal":"2026-10-12T13:50:00+03:00","metarType":"METAR","raw":"METAR LTFM 121050Z 35011KT 310V010 9999 FEW025 BKN180 22/16 Q1011 NOSIG","temp":22,"dewpoint":16,"humidity":69,"wind":5.7,"precipObserved":false,"correctedAt":null,"originalRaw":null}},"finality":{"status":"final","finalAt":"2026-10-13T00:00:00.000Z","settleable":true,"coverage":{"ok":true,"maxGapMinutes":30,"normalIntervalMin":30,"thresholdMinutes":60},"reasons":[],"holdHours":3},"revision":"903ccecdfd8def6b","lastChangedAt":"2026-10-12T20:55:42.582Z","corrections":[{"obsTimeUtc":"2026-10-12T06:50:00.000Z","correctedAt":"2026-10-12T09:38:38.451Z","original":"METAR LTFM 120650Z 31004KT 240V350 CAVOK 21/11 Q1012 NOSIG","corrected":"METAR LTFM 120650Z 31004KT 240V350 CAVOK 21/11 Q1012 NOSIG RMK RWY17L 28004KT RWY34L 30004G14KT 260V340 RWY16R 26003KT 230V300 RWY36 30003KT 270V330 RWY18 29005KT 270V030"},{"obsTimeUtc":"2026-10-12T07:20:00.000Z","correctedAt":"2026-10-12T09:38:38.451Z","original":"METAR LTFM 120720Z VRB03KT CAVOK 22/12 Q1012 NOSIG","corrected":"METAR LTFM 120720Z VRB03KT CAVOK 22/12 Q1012 NOSIG RMK RWY17L VRB02KT RWY34L VRB02KT RWY16R VRB01KT RWY36 VRB02KT RWY18 VRB03KT"},{"obsTimeUtc":"2026-10-12T07:50:00.000Z","correctedAt":"2026-10-12T09:38:38.451Z","original":"METAR LTFM 120750Z 34004KT 270V080 CAVOK 22/11 Q1012 NOSIG","corrected":"METAR LTFM 120750Z 34004KT 270V080 CAVOK 22/11 Q1012 NOSIG RMK RWY17L VRB03KT RWY34L 35004KT 300V060 RWY16R 32003KT 280V360 RWY36 VRB02KT RWY18 VRB03KT"},{"obsTimeUtc":"2026-10-12T08:20:00.000Z","correctedAt":"2026-10-12T09:38:38.451Z","original":"METAR LTFM 120820Z 35004KT 290V030 CAVOK 23/12 Q1012 NOSIG","corrected":"METAR LTFM 120820Z 35004KT 290V030 CAVOK 23/12 Q1012 NOSIG RMK RWY17L 31004KT 260V010 RWY34L 32004KT 260V020 RWY16R 35004KT 300V020 RWY36 35003KT 260V050 RWY18 32005G20KT 280V090"},{"obsTimeUtc":"2026-10-12T08:50:00.000Z","correctedAt":"2026-10-12T09:38:38.451Z","original":"METAR LTFM 120850Z 36006KT 290V040 CAVOK 23/13 Q1012 NOSIG","corrected":"METAR LTFM 120850Z 36006KT 290V040 CAVOK 23/13 Q1012 NOSIG RMK RWY17L 35009KT RWY34L 32006KT 280V010 RWY16R 35007KT RWY36 36008KT RWY18 34009KT"},{"obsTimeUtc":"2026-10-12T09:20:00.000Z","correctedAt":"2026-10-12T09:41:39.196Z","original":"METAR LTFM 120920Z 34009KT 310V010 CAVOK 22/15 Q1012 NOSIG","corrected":"METAR LTFM 120920Z 34009KT 310V010 CAVOK 22/15 Q1012 NOSIG RMK RWY17L 34010KT RWY34L 33009KT 280V350 RWY16R 35008KT RWY36 35010KT RWY18 34011KT"}],"anchor":{"contract":"0x2B59812947B48B5988FaA805a9514a5162415091","chainId":14,"record":"https://weathermarket.io/api/station/LTFM/2026-10-12?format=record","status":"anchored","sha256":"a736b8991c5ece8366187274cea16284fb5e1fce59aa58bfeeb3de38199d5674","revision":"903ccecdfd8def6b","flareTxHash":"0x40c5255b94cded18a1f5fa1b47a7d091166daa7875295c16df2f546603b37d30","flareBlock":71969642,"anchoredAt":"2026-10-13T00:01:57.219Z","explorer":"https://flare-explorer.flare.network/tx/0x40c5255b94cded18a1f5fa1b47a7d091166daa7875295c16df2f546603b37d30","matchesCurrent":true,"note":"GET the record bytes, SHA-256 them, and call SnapshotAnchor.isAnchored(sha256) on Flare - the anchored record is the one to settle on"},"qc":{"summary":{"good":48,"suspect":0,"bad":0,"flagged":[]},"extremes":{"tmax":{"obsTimeUtc":"2026-10-12T08:20:00.000Z","flag":"good","reasons":[]},"tmin":{"obsTimeUtc":"2026-10-12T02:50:00.000Z","flag":"good","reasons":[]},"anyFlagged":false},"excludingBad":{"tmax":23,"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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NOSIG","temp":19,"dewpoint":18,"humidity":94,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T18:50:00.000Z","obsTimeLocal":"2026-10-12T21:50:00+03:00","metarType":"METAR","raw":"METAR LTFM 121850Z 03006KT 9999 SCT008 BKN028 BKN080 19/18 Q1013 NOSIG","temp":19,"dewpoint":18,"humidity":94,"wind":3.1,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T19:20:00.000Z","obsTimeLocal":"2026-10-12T22:20:00+03:00","metarType":"METAR","raw":"METAR LTFM 121920Z 35007KT 310V030 9999 SCT008 BKN028 BKN080 19/18 Q1013 NOSIG","temp":19,"dewpoint":18,"humidity":94,"wind":3.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T19:50:00.000Z","obsTimeLocal":"2026-10-12T22:50:00+03:00","metarType":"METAR","raw":"METAR LTFM 121950Z 01005KT 320V060 9999 SCT008 BKN028 19/17 Q1014 NOSIG","temp":19,"dewpoint":17,"humidity":88,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T20:20:00.000Z","obsTimeLocal":"2026-10-12T23:20:00+03:00","metarType":"METAR","raw":"METAR LTFM 122020Z 34005KT 9999 VCSH SCT008 BKN028 19/17 Q1014 NOSIG","temp":19,"dewpoint":17,"humidity":88,"wind":2.6,"precipObserved":false,"correctedAt":null,"originalRaw":null},{"obsTimeUtc":"2026-10-12T20:50:00.000Z","obsTimeLocal":"2026-10-12T23:50:00+03:00","metarType":"METAR","raw":"METAR LTFM 122050Z 35004KT 9999 VCSH SCT008 BKN028 19/17 Q1014 NOSIG","temp":19,"dewpoint":17,"humidity":88,"wind":2.1,"precipObserved":false,"correctedAt":null,"originalRaw":null}],"about":{"record":"Station-day record: the daily extremes over every METAR observation (hourly plus special reports) received for the station's local calendar day - local midnight to local midnight, daylight saving applied. 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/2026-10-12","json":"https://weathermarket.io/api/station/LTFM/2026-10-12","record":"https://weathermarket.io/api/station/LTFM/2026-10-12?format=record","prev":"https://weathermarket.io/station/LTFM/2026-10-11","next":"https://weathermarket.io/station/LTFM/2026-10-13","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=11&year2=2026&month2=10&day2=13&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=11&hora=21&anof=2026&mesf=10&dayf=12&horaf=20&minf=59&send=send","awcLive":"https://aviationweather.gov/data/metar/?ids=LTFM"}}}