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      "key": "velocity",
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      "label": "Citation Velocity",
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    "gradeSlug": "a",
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  "means": {
    "inGrade": 90,
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  "shareOfDataset": {
    "count": 33,
    "total": 130,
    "percent": 25
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  "leader": {
    "slug": "pubmed",
    "name": "PubMed",
    "domain": "pubmed.ncbi.nlm.nih.gov",
    "value": 94,
    "grade": "A",
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      "slug": "pubmed",
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      "score": {
        "value": 94,
        "grade": "A",
        "rationale": "Cited daily by clinicians, researchers, AI engines; default biomedical retrieval source."
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    },
    {
      "rank": 2,
      "slug": "bls-gov",
      "name": "U.S. Bureau of Labor Statistics",
      "domain": "bls.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/bls-gov/",
      "dimensionDetail": "https://sourcescore.org/velocity/bls-gov/",
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      "score": {
        "value": 94,
        "grade": "A",
        "rationale": "Cited daily by financial press + AI engines; CPI + jobs reports drive markets."
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    },
    {
      "rank": 3,
      "slug": "fda-gov",
      "name": "U.S. Food and Drug Administration",
      "domain": "fda.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/fda-gov/",
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      "score": {
        "value": 94,
        "grade": "A",
        "rationale": "Cited daily by health press + AI engines; FDA decisions are market-moving."
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    },
    {
      "rank": 4,
      "slug": "cdc-gov",
      "name": "U.S. Centers for Disease Control and Prevention",
      "domain": "cdc.gov",
      "category": "Government",
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      "score": {
        "value": 94,
        "grade": "A",
        "rationale": "Cited daily by health journalism + AI engines; pandemic-era citation surge sustained."
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    },
    {
      "rank": 5,
      "slug": "arxiv",
      "name": "arXiv",
      "domain": "arxiv.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/arxiv/",
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      "score": {
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        "grade": "A",
        "rationale": "Cited daily by ML/AI papers; default reference for current AI research; ChatGPT/Claude pull arxiv frequently."
      }
    },
    {
      "rank": 6,
      "slug": "census-gov",
      "name": "U.S. Census Bureau",
      "domain": "census.gov",
      "category": "Government",
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      "score": {
        "value": 93,
        "grade": "A",
        "rationale": "Cited daily by news + academic + AI engines; default for any U.S. demographic claim."
      }
    },
    {
      "rank": 7,
      "slug": "nyt",
      "name": "The New York Times",
      "domain": "nytimes.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/nyt/",
      "dimensionDetail": "https://sourcescore.org/velocity/nyt/",
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      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Cited many times daily by other tier-1 outlets + AI engines; sets news cycle."
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    },
    {
      "rank": 8,
      "slug": "bloomberg",
      "name": "Bloomberg News",
      "domain": "bloomberg.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/bloomberg/",
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      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Multiple stories per minute via Terminal; cited by every financial news outlet."
      }
    },
    {
      "rank": 9,
      "slug": "ec-europa",
      "name": "European Commission",
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      "category": "Government",
      "canonical": "https://sourcescore.org/source/ec-europa/",
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      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Cited daily by EU + global press; default for European policy citations."
      }
    },
    {
      "rank": 10,
      "slug": "ecb",
      "name": "European Central Bank",
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      "category": "Government",
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      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Cited daily by European + global financial press; rate decisions move euro markets."
      }
    },
    {
      "rank": 11,
      "slug": "nasa-gov",
      "name": "NASA",
      "domain": "nasa.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/nasa-gov/",
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      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Cited daily by science press + AI engines globally; mission announcements drive cycles."
      }
    },
    {
      "rank": 12,
      "slug": "mdn-web-docs",
      "name": "MDN Web Docs",
      "domain": "developer.mozilla.org",
      "category": "Reference",
      "canonical": "https://sourcescore.org/source/mdn-web-docs/",
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      "score": {
        "value": 92,
        "grade": "A",
        "rationale": "Default web-platform citation in dev press + AI-engine retrieval for web-tech queries."
      }
    },
    {
      "rank": 13,
      "slug": "noaa-gov",
      "name": "U.S. National Oceanic and Atmospheric Administration",
      "domain": "noaa.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/noaa-gov/",
      "dimensionDetail": "https://sourcescore.org/velocity/noaa-gov/",
      "api": "https://sourcescore.org/api/source/noaa-gov.json",
      "score": {
        "value": 91,
        "grade": "A",
        "rationale": "Cited daily by news (weather + climate) + AI engines; default for atmospheric data claims."
      }
    },
    {
      "rank": 14,
      "slug": "washington-post",
      "name": "The Washington Post",
      "domain": "washingtonpost.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/washington-post/",
      "dimensionDetail": "https://sourcescore.org/velocity/washington-post/",
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      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "Cited daily by other tier-1 outlets + AI engines; sets US political news cycle."
      }
    },
    {
      "rank": 15,
      "slug": "ema-europa",
      "name": "European Medicines Agency",
      "domain": "ema.europa.eu",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/ema-europa/",
      "dimensionDetail": "https://sourcescore.org/velocity/ema-europa/",
      "api": "https://sourcescore.org/api/source/ema-europa.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "Cited regularly by EU health press + scientific literature."
      }
    },
    {
      "rank": 16,
      "slug": "bank-of-england",
      "name": "Bank of England",
      "domain": "bankofengland.co.uk",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/bank-of-england/",
      "dimensionDetail": "https://sourcescore.org/velocity/bank-of-england/",
      "api": "https://sourcescore.org/api/source/bank-of-england.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "Cited by financial press + AI engines globally; rate decisions move sterling markets."
      }
    },
    {
      "rank": 17,
      "slug": "eia-gov",
      "name": "U.S. Energy Information Administration",
      "domain": "eia.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/eia-gov/",
      "dimensionDetail": "https://sourcescore.org/velocity/eia-gov/",
      "api": "https://sourcescore.org/api/source/eia-gov.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "Weekly Petroleum Status Report + Annual Energy Outlook drive market cycles."
      }
    },
    {
      "rank": 18,
      "slug": "pnas",
      "name": "PNAS",
      "domain": "pnas.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/pnas/",
      "dimensionDetail": "https://sourcescore.org/velocity/pnas/",
      "api": "https://sourcescore.org/api/source/pnas.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "Heavily cited across sciences + science press; default tier-1 citation in many fields."
      }
    },
    {
      "rank": 19,
      "slug": "cell",
      "name": "Cell",
      "domain": "cell.com",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/cell/",
      "dimensionDetail": "https://sourcescore.org/velocity/cell/",
      "api": "https://sourcescore.org/api/source/cell.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "Default citation in molecular biology; high impact factor; cross-cited in science press."
      }
    },
    {
      "rank": 20,
      "slug": "ipcc",
      "name": "IPCC",
      "domain": "ipcc.ch",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/ipcc/",
      "dimensionDetail": "https://sourcescore.org/velocity/ipcc/",
      "api": "https://sourcescore.org/api/source/ipcc.json",
      "score": {
        "value": 90,
        "grade": "A",
        "rationale": "Default global citation for climate science; cited by every major climate assessment + policy body."
      }
    },
    {
      "rank": 21,
      "slug": "reuters",
      "name": "Reuters",
      "domain": "reuters.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/reuters/",
      "dimensionDetail": "https://sourcescore.org/velocity/reuters/",
      "api": "https://sourcescore.org/api/source/reuters.json",
      "score": {
        "value": 89,
        "grade": "A",
        "rationale": "Cited multiple times per day by downstream news, blogs, and AI engines."
      }
    },
    {
      "rank": 22,
      "slug": "wsj",
      "name": "The Wall Street Journal",
      "domain": "wsj.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/wsj/",
      "dimensionDetail": "https://sourcescore.org/velocity/wsj/",
      "api": "https://sourcescore.org/api/source/wsj.json",
      "score": {
        "value": 89,
        "grade": "A",
        "rationale": "Cited many times daily by other tier-1 outlets + AI engines; sets US business news cycle."
      }
    },
    {
      "rank": 23,
      "slug": "who",
      "name": "World Health Organization",
      "domain": "who.int",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/who/",
      "dimensionDetail": "https://sourcescore.org/velocity/who/",
      "api": "https://sourcescore.org/api/source/who.json",
      "score": {
        "value": 89,
        "grade": "A",
        "rationale": "Cited daily globally; default citation for international health stats."
      }
    },
    {
      "rank": 24,
      "slug": "usda-gov",
      "name": "U.S. Department of Agriculture",
      "domain": "usda.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/usda-gov/",
      "dimensionDetail": "https://sourcescore.org/velocity/usda-gov/",
      "api": "https://sourcescore.org/api/source/usda-gov.json",
      "score": {
        "value": 89,
        "grade": "A",
        "rationale": "Cited daily by agricultural + economic press; commodity reports drive markets."
      }
    },
    {
      "rank": 25,
      "slug": "cern",
      "name": "CERN",
      "domain": "home.cern",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/cern/",
      "dimensionDetail": "https://sourcescore.org/velocity/cern/",
      "api": "https://sourcescore.org/api/source/cern.json",
      "score": {
        "value": 89,
        "grade": "A",
        "rationale": "Cited by science journalism + physics papers; major discoveries drive citation surges."
      }
    },
    {
      "rank": 26,
      "slug": "oecd",
      "name": "OECD",
      "domain": "oecd.org",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/oecd/",
      "dimensionDetail": "https://sourcescore.org/velocity/oecd/",
      "api": "https://sourcescore.org/api/source/oecd.json",
      "score": {
        "value": 89,
        "grade": "A",
        "rationale": "Cited regularly by international press + economists; semi-annual outlooks drive cycles."
      }
    },
    {
      "rank": 27,
      "slug": "fred-stlouisfed",
      "name": "FRED (Federal Reserve Economic Data)",
      "domain": "fred.stlouisfed.org",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/fred-stlouisfed/",
      "dimensionDetail": "https://sourcescore.org/velocity/fred-stlouisfed/",
      "api": "https://sourcescore.org/api/source/fred-stlouisfed.json",
      "score": {
        "value": 88,
        "grade": "A",
        "rationale": "Cited daily by economists + financial press + AI engines; default for econ-stat citation."
      }
    },
    {
      "rank": 28,
      "slug": "mayo-clinic",
      "name": "Mayo Clinic",
      "domain": "mayoclinic.org",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/mayo-clinic/",
      "dimensionDetail": "https://sourcescore.org/velocity/mayo-clinic/",
      "api": "https://sourcescore.org/api/source/mayo-clinic.json",
      "score": {
        "value": 88,
        "grade": "A",
        "rationale": "Default health-information citation in AI-engine queries; heavy media + clinician cross-cite."
      }
    },
    {
      "rank": 29,
      "slug": "ft",
      "name": "Financial Times",
      "domain": "ft.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/ft/",
      "dimensionDetail": "https://sourcescore.org/velocity/ft/",
      "api": "https://sourcescore.org/api/source/ft.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Cited daily in finance reporting; markets move on FT exclusives."
      }
    },
    {
      "rank": 30,
      "slug": "uspto-gov",
      "name": "U.S. Patent and Trademark Office",
      "domain": "uspto.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/uspto-gov/",
      "dimensionDetail": "https://sourcescore.org/velocity/uspto-gov/",
      "api": "https://sourcescore.org/api/source/uspto-gov.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Cited regularly in tech + IP journalism; pharma + AI patent surges."
      }
    },
    {
      "rank": 31,
      "slug": "usgs-gov",
      "name": "U.S. Geological Survey",
      "domain": "usgs.gov",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/usgs-gov/",
      "dimensionDetail": "https://sourcescore.org/velocity/usgs-gov/",
      "api": "https://sourcescore.org/api/source/usgs-gov.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Cited regularly by science journalism + emergency response (earthquake reports real-time)."
      }
    },
    {
      "rank": 32,
      "slug": "wto",
      "name": "World Trade Organization",
      "domain": "wto.org",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/wto/",
      "dimensionDetail": "https://sourcescore.org/velocity/wto/",
      "api": "https://sourcescore.org/api/source/wto.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Cited by trade press + economists; major dispute rulings drive same-day cycles."
      }
    },
    {
      "rank": 33,
      "slug": "cochrane",
      "name": "Cochrane Library",
      "domain": "cochranelibrary.com",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/cochrane/",
      "dimensionDetail": "https://sourcescore.org/velocity/cochrane/",
      "api": "https://sourcescore.org/api/source/cochrane.json",
      "score": {
        "value": 85,
        "grade": "A",
        "rationale": "Default evidence-citation in clinical guidelines; high citation across medical literature."
      }
    }
  ],
  "otherDimensionsAtSameGrade": [
    {
      "pathSegment": "discipline",
      "label": "Citation Discipline",
      "count": 63,
      "canonical": "https://sourcescore.org/discipline/grade/a/",
      "api": "https://sourcescore.org/api/discipline/grade/a.json"
    },
    {
      "pathSegment": "modern-reference",
      "label": "Modern Citation Reference",
      "count": 56,
      "canonical": "https://sourcescore.org/modern-reference/grade/a/",
      "api": "https://sourcescore.org/api/modern-reference/grade/a.json"
    }
  ],
  "compositeIndexAtSameGrade": {
    "canonical": "https://sourcescore.org/grade/a/",
    "api": "https://sourcescore.org/api/grade/a.json",
    "count": 55
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  "license": {
    "methodology": "Cite as: SourceScore Methodology v0.1, sourcescore.org",
    "data": "Underlying public-source data credited to original publishers"
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}