{
 "schema": "nephos.method.v1",
 "slug": "ryerson-commercial-street-1911",
 "title": "Margery Austen Ryerson, Commercial Street, Provincetown",
 "urls": [
  "/studies/ryerson-commercial-street-1911"
 ],
 "written": {
  "summary": "PAAM dates the panel to 1911; Quinn dates Ryerson’s first Cape Cod summer to that year. A contemporary report fixes the school session, not her attendance dates. Nephos reads the press reproduction as a sunlit street in a leafy season.",
  "items": [
   {
    "quote": "Date made: 1911",
    "source": "PAAM, object 3282.058.Pa25",
    "url": "https://paam.org/collection/folder/the-napi-and-helen-van-dereck-collection/entry/commercial-street-provincetown"
   },
   {
    "quote": "In 1911, Ryerson began spending summers on Cape Cod.",
    "source": "Karen E. Quinn, Margery Ryerson: Art Is Contagious (2025), p. 11",
    "url": "https://nysm.nysed.gov/sites/default/files/2025-07/Margery_Ryerson_Art_is_Contagious_2025_a.pdf"
   },
   {
    "quote": "Painting from landscape, still life, and the figure—indoors and out.",
    "source": "U.S. Bureau of Education, Summer schools in 1911, p. 1141",
    "url": "https://archive.org/download/summerschooli1900unit/summerschooli1900unit.pdf"
   },
   {
    "quote": "with every one of the crew only too thankful to get home alive.",
    "source": "Daily Kennebec Journal, 31 July 1911, p. 1; Provincetown dispatch of July 30",
    "url": "https://www.loc.gov/resource/sn82014248/1911-07-31/ed-1/?sp=1"
   }
  ]
 },
 "records": [
  {
   "name": "Provincetown daily record",
   "detail": "NOAA USC00196676, about 5.2 km from Town Hall. Rain flags retained; presumed zeroes are unknown, not observed dry days.",
   "url": "https://www.ncei.noaa.gov/pub/data/ghcn/daily/all/USC00196676.dly"
  },
  {
   "name": "Blue Hill daily cloud and monthly sunshine",
   "detail": "Summit observations near Boston, about 78.5 km from Provincetown Town Hall. Printed daily 8 a.m. cloud and monthly Campbell–Stokes sunshine; a separate regional record.",
   "url": "https://articles.adsabs.harvard.edu/cgi-bin/t2png?bg=%23FFFFFF&/seri/AnHar/0073/600/0000121.000&db_key=AST&bits=4&res=200&filetype=.png"
  },
  {
   "name": "Then and now at Blue Hill",
   "detail": "1911 daily temperatures and NOAA 1991–2020 monthly normals for USC00190736. No station pooling or Provincetown successor splice.",
   "url": "https://www.ncei.noaa.gov/data/normals-monthly/1991-2020/access/USC00190736.csv"
  }
 ],
 "gaps": [
  "The painted day and Ryerson’s exact arrival/departure remain unknown.",
  "No verified local cloud series or 1911 Advocate weather passage was recovered; the checked online newspaper year list omits 1911.",
  "Open reproduction rights and a work-specific account of alterations remain unresolved."
 ],
 "tests": [
  {
   "claim": "How often did low-cloud mornings recur in the regional record during the two full school months?",
   "result": "27 of 62 mornings had at most two tenths cloud at Blue Hill. Bright conditions recur in both months; the painting cannot be assigned to any of them."
  },
  {
   "claim": "Does a sunnier month mean no rain?",
   "result": "Blue Hill recorded 62% of possible sunshine in July and 53% in August. Provincetown has 12 quantified rain entries and 2 traces in those two months; these are separate places and different measures."
  },
  {
   "claim": "Can this identify a painted day or a heatwave scene?",
   "result": "No. Cast shadows support direct light; they do not measure heat, and the regional cloud record cannot date this panel."
  }
 ],
 "finding": "A sunny street belongs within a changeable summer. Regional light records make the sunlit reading plausible without turning it into a dated weather report.",
 "verdicts": [
  {
   "claim": "Recurring opportunities for direct light in the regional school-season record",
   "verdict": "Partially agrees",
   "reason": "The defined proxy occurs on 27/62 mornings; monthly sunshine supplies a separate measure at the same observatory."
  },
  {
   "claim": "Weather agreement at the painted street and hour",
   "verdict": "Unknown",
   "reason": "The scene’s date is unknown and Blue Hill is regional."
  }
 ],
 "limits": [
  "July–August are the two full months within the school session of July 1–September 1, not documented execution dates.",
  "An 8 a.m. low-cloud reading is not a whole clear day. Sunshine duration is measured at Blue Hill, not at the street.",
  "The 1991–2020 comparison is descriptive, not a climate trend estimated from this painting."
 ]
}