{
  "edition": "lubbock-2026-09-descriptive-study-v2",
  "priorEdition": "lubbock-2026-09-descriptive-pilot-v1",
  "previousUsable": 5984,
  "currentUsable": 6000,
  "interpretation": "Changed question and response selection, not longitudinal business improvement.",
  "changes": [
    {
      "key": "aio:personal-injury-law",
      "previous": {
        "numerator": 11,
        "denominator": 50,
        "mean": null
      },
      "current": {
        "numerator": 2,
        "denominator": 50,
        "mean": null
      }
    },
    {
      "key": "aio:all",
      "previous": {
        "numerator": 608,
        "denominator": 1000,
        "mean": null
      },
      "current": {
        "numerator": 599,
        "denominator": 1000,
        "mean": null
      }
    },
    {
      "key": "bbb.org:chatgpt",
      "previous": {
        "numerator": 250,
        "denominator": 994,
        "mean": null
      },
      "current": {
        "numerator": 251,
        "denominator": 1000,
        "mean": null
      }
    },
    {
      "key": "expertise.com:chatgpt",
      "previous": {
        "numerator": 227,
        "denominator": 994,
        "mean": null
      },
      "current": {
        "numerator": 236,
        "denominator": 1000,
        "mean": null
      }
    },
    {
      "key": "gorilla:chatgpt",
      "previous": {
        "numerator": 0,
        "denominator": 49,
        "mean": null
      },
      "current": {
        "numerator": 1,
        "denominator": 50,
        "mean": null
      }
    },
    {
      "key": "gorilla:perplexity",
      "previous": {
        "numerator": 24,
        "denominator": 50,
        "mean": null
      },
      "current": {
        "numerator": 20,
        "denominator": 50,
        "mean": null
      }
    },
    {
      "key": "overlap:maps",
      "previous": {
        "numerator": null,
        "denominator": null,
        "mean": 0.979997435509073
      },
      "current": {
        "numerator": null,
        "denominator": null,
        "mean": 0.979858836815358
      }
    },
    {
      "key": "overlap:organic",
      "previous": {
        "numerator": null,
        "denominator": null,
        "mean": 0.8861004802814182
      },
      "current": {
        "numerator": null,
        "denominator": null,
        "mean": 0.8869101390352416
      }
    }
  ]
}