{
  "apiVersion": "v0.1",
  "methodology": "https://sourcescore.org/methodology/citation-velocity/",
  "canonical": "https://sourcescore.org/velocity/pnas/",
  "dimension": {
    "key": "velocity",
    "label": "Citation Velocity",
    "weightInComposite": "35%"
  },
  "source": {
    "slug": "pnas",
    "name": "PNAS",
    "domain": "pnas.org",
    "category": "Academic",
    "canonical": "https://sourcescore.org/source/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.",
    "signals": [
      {
        "label": "Cross-disciplinary citation",
        "detail": "Cited across biology, physics, social sciences, climate."
      }
    ]
  },
  "rank": {
    "global": 23,
    "globalTotal": 130,
    "category": 4,
    "categoryTotal": 19
  },
  "means": {
    "category": 81,
    "global": 81,
    "deltaVsCategory": 9,
    "deltaVsGlobal": 9
  },
  "otherDimensions": {
    "index": {
      "value": 92,
      "grade": "A"
    },
    "discipline": {
      "value": 96,
      "grade": "A+",
      "canonical": "https://sourcescore.org/discipline/pnas/"
    },
    "modernReference": {
      "value": 88,
      "grade": "A",
      "canonical": "https://sourcescore.org/modern-reference/pnas/"
    }
  },
  "license": {
    "methodology": "Cite as: SourceScore Methodology v0.1, sourcescore.org",
    "data": "Underlying public-source data credited to original publishers"
  }
}