{
 "schema": "nephos.study.monhegan-wreck.v1",
 "slug": "demartini-wreck-st-christopher-1949",
 "object": {
  "artist": "Joseph De Martini",
  "title": "The Wreck of the St. Christopher",
  "date": "1949",
  "medium": "oil on canvas",
  "dimensions": "30 × 40 in.",
  "accession": "5745",
  "identification_receipt": "museum-object",
  "catalogue_fields": {
   "Title": "The Wreck of the St. Christopher",
   "Artist": "DeMartini, Joseph",
   "Life Dates": "1896/1984",
   "Birthplace": "Mobile, AL",
   "Date or Period": "1949",
   "Medium": "oil on canvas",
   "Measurement": "30 x 40 in.",
   "Attribution": "Anonymous gift",
   "Signature": "l.r. in red paint \"Joseph DeMartini\" ",
   "Accession Number": "5745",
   "1999 Exhibition": "Here by Choice",
   "2001 Exhibition": "Monhegan: The Abstracted Island Bates College Museum of Art, Lewiston, Maine",
   "2006 Exhibition": "Passionate Pursuits: History in the Collector's Eye, Maine Historical Society, Portland",
   "2013 Exhibition": "A Spirit of Wonder: Monhegan Artists and the 1913 Armory Show",
   "2018 Exhibition": "An Island Treasure: Celebrating 50 Years of the Monhegan Museum of Art and History"
  },
  "holder": "Monhegan Museum of Art & History",
  "image": null,
  "image_reason": "no_explicit_open_licence_established",
  "making": null,
  "making_reason": "no_verified_sitting_sketch_or_studio_sequence",
  "sky_description": null,
  "sky_description_reason": "no_verified_object_specific_weather_description_or_licensed_image_reading",
  "scene_date": null,
  "scene_date_reason": "wreck_date_does_not_date_depicted_scene"
 },
 "window": {
  "start_est": "1949-08-05T00:00:00",
  "end_est_exclusive": "1949-08-07T00:00:00",
  "basis": "Museum-attributed wreck date plus the next calendar day. Winter’s scene is attributed to the following morning; the De Martini window is event context, not a dated sitting.",
  "timezone": "Fixed EST, UTC−05:00, throughout. Add one hour for an EDT clock; no historical local summer-clock rule is asserted."
 },
 "station": {
  "id": "999999-14764",
  "name": "Portland airport, Maine",
  "latitude": 43.65,
  "longitude": -70.317,
  "elevation_m": [
   24
  ],
  "distance_km": 81.4,
  "distance_to": "Monhegan Island Light",
  "location_reference": {
   "latitude": 43.765,
   "longitude": -69.31666666666666,
   "name": "Monhegan Island Light",
   "receipt": "location",
   "limit": "Island location reference, not the painter’s viewpoint or an observing station."
  },
  "history_entry": {
   "USAF": "999999",
   "WBAN": "14764",
   "STATION NAME": "PORTLAND INTL JETPORT",
   "CTRY": "US",
   "STATE": "ME",
   "ICAO": "KPWM",
   "LAT": "+43.650",
   "LON": "-070.300",
   "ELEV(M)": "+0019.2",
   "BEGIN": "19480101",
   "END": "19721231"
  },
  "coordinate_basis": "Coordinates in the selected historical ISD reports; inventory coordinates are retained separately.",
  "limit": "An airport west of Monhegan, not an island or marine observation. Historical wind exposure and averaging period are unresolved."
 },
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   "sky_cover_oktas": {
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   "visibility_below_1000m_reports": 0,
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   "receipt": "portland"
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  {
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   },
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  {
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   },
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  },
  {
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   },
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 ],
 "quotations": [
  {
   "quote": "The St. Christopher wrecked at Lobster Cove on the evening of August 5, 1949.",
   "source": "Jennifer Pye, Director, Monhegan Museum of Art & History, email to Vedang Sharma, 13 October 2026",
   "receipt": "museum-note",
   "independence": "modern museum attribution"
  }
 ],
 "sunrise": null,
 "sunrise_reason": "not_needed_for_an_undated_depicted_moment",
 "definitions": {
  "quality": "Use only ISD quality 1 or 5 (passed all checks). Preserve source fields, rejected values and reasons. No gap fill, station pooling or duplicate-time averaging.",
  "visibility_zero": "An encoded zero is retained, not treated as missing or literal zero optical range. Historical reporting and digitization resolution are not resolved.",
  "wind": "Reported speed, in tenths of m/s divided by ten. Wind type 9 leaves averaging duration unspecified; these are not gusts or marine wave estimates.",
  "sky_cover": "GF1 total coverage codes 00–08 mapped to oktas; coverage includes cloud or obscuring phenomena. Other codes remain null with a reason.",
  "weather": "MW groups retained as codes. Absent groups do not establish that fog or precipitation was absent.",
  "summaries": "Min/max across the named sampled hours only. No whole-day extremes, climate rank or modern normal is inferred."
 },
 "local_weather": null,
 "local_weather_reason": "no_linked_island_observations",
 "sea_state": null,
 "sea_state_reason": "no_contemporary_wave_record_recovered",
 "cause_of_wreck": null,
 "cause_of_wreck_reason": "no_investigation_report_examined",
 "painting_weather_match": null,
 "painting_weather_match_reason": "no_verified_painted_sky_description_and_no_local_weather_record",
 "receipts": {
  "station-history": {
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   "url": "https://www.ncei.noaa.gov/pub/data/noaa/isd-history.csv",
   "sha256": "1994747ab4af1b97e63adb434b4d0d022f2daee76f0c144ea9ab46be2d906604",
   "retrieved_at": "2026-10-15",
   "license": "US government meteorological data/documentation; public domain.",
   "locator": "USAF 999999, WBAN 14764; historical report coordinates retained separately."
  },
  "format": {
   "title": "NOAA Integrated Surface Data format",
   "url": "https://www.ncei.noaa.gov/pub/data/noaa/isd-format-document.pdf",
   "sha256": "1be604b08b5f7c2429e6aef178ff8893019c234bc7bc51bfb7ec1e16a6682f04",
   "retrieved_at": "2026-10-15",
   "license": "US government meteorological data/documentation; public domain.",
   "locator": "pp. 5, 8–10, 63–64, 103–107: UTC, wind, visibility, sky coverage and present-weather codes."
  },
  "location": {
   "title": "US Lighthouse Society, Monhegan Island location",
   "url": "https://archives.uslhs.org/places/monhegan-island",
   "sha256": "2c5db4cf87433d0d9d6e47e7e3a188d9af3666a74db556b075cf4c691ab94ca3",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained by source; short evidence excerpts and factual metadata only. No artwork reproduction licence.",
   "note": "HTMLParser text derivative of the separately fingerprinted page; latitude 43°45.9′ N, longitude 69°19′ W. Island reference, not the painter’s viewpoint."
  },
  "location-html": {
   "title": "US Lighthouse Society, original location page",
   "url": "https://archives.uslhs.org/places/monhegan-island",
   "sha256": "248666edcfe0da8ee9c7804a7a331c858eb7ba338565fab5a578f518bd25cd3f",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained by source; short evidence excerpts and factual metadata only. No artwork reproduction licence."
  },
  "portland": {
   "title": "NOAA ISD, Portland airport, 1949, 999999–14764",
   "url": "https://www.ncei.noaa.gov/pub/data/noaa/1949/999999-14764-1949.gz",
   "sha256": "dd2ea7c0061a50f25002b186bec9fe66847f64eb8f4cdb44aa19ed99220ea695",
   "retrieved_at": "2026-10-15",
   "license": "US government meteorological data/documentation; public domain."
  },
  "museum-note": {
   "title": "Jennifer Pye, Director, Monhegan Museum of Art & History, email to the author, 13 October 2026",
   "url": "https://nephos-mocha.vercel.app/data/studies/demartini-wreck-st-christopher-1949.json",
   "sha256": "8577bc0945f8c2d41a45be19a573dcedc0ae493cabd9804d088dfc0b421e4dcc",
   "retrieved_at": "2026-10-15",
   "license": "Private correspondence, quoted with attribution; no image reuse permission.",
   "note": "The email is not public; the link is to this study’s data, which reproduces the quoted passage."
  },
  "museum-object": {
   "title": "Monhegan Museum collection, The Wreck of the St. Christopher, 5745",
   "url": "https://monheganmuseum.org/search-art-2/",
   "sha256": "72f543d647252c4224f846feb5978b3edf4af05eb1596457b01190db17bca3db",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained by source; short evidence excerpts and factual metadata only. No artwork reproduction licence.",
   "note": "JSON decoded from the object’s HTML data-attributes. The full collection page has a separate fingerprint; image not downloaded."
  },
  "museum-html": {
   "title": "Monhegan Museum collection page, original HTML",
   "url": "https://monheganmuseum.org/search-art-2/",
   "sha256": "671d95e49a7dafd8664d821e181eef87120bbd00307e068ea3558b602e6ed8d2",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained by source; short evidence excerpts and factual metadata only. No artwork reproduction licence.",
   "locator": "Anchor with Title The Wreck of the St. Christopher, Accession Number 5745."
  },
  "gallery": {
   "title": "Maine Art Collectors, Joseph DeMartini on Monhegan",
   "url": "https://www.monheganmaineartists.com/josephdemartinipaintingsforsale",
   "sha256": "c8de6344326d030fcdf66213d3adc324164d48c5c2ca2f2b87a9287a87ed4788",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained by source; short evidence excerpts and factual metadata only. No artwork reproduction licence.",
   "note": "HTMLParser text derivative; secondary gallery history gives Squeaker Cove. Retained as an unresolved place discrepancy, not proof of a different object or of a wreck date."
  },
  "gallery-html": {
   "title": "Maine Art Collectors, original gallery page",
   "url": "https://www.monheganmaineartists.com/josephdemartinipaintingsforsale",
   "sha256": "b228df6739cdd1d9eb4132502d3a866766ea6b4da9d36a75762793889fcb5b2a",
   "retrieved_at": "2026-10-15",
   "license": "Copyright retained by source; short evidence excerpts and factual metadata only. No artwork reproduction licence."
  }
 }
}