{
  "total": 2,
  "source": "d1",
  "tracking_since": "2026-10-25T12:38:37.716Z",
  "source_rechecks": {
    "rows": 1117,
    "series": 752,
    "last_checked_at": "2026-10-27T07:49:20.000Z",
    "latest_result_counts": {
      "confirmed": 706,
      "changed": 5,
      "unreachable": 21,
      "needs_review": 2,
      "partial": 7,
      "not_found_on_page": 11
    },
    "method": "Each source URL is fetched and the recorded numbers are looked for in the page (PDFs via pdftotext); anything not confirmed is reviewed by a human. Log: /downloads/price_rechecks.jsonl"
  },
  "observations": [
    {
      "id": "po_20261025_3a07e0adb93c",
      "series_key": "ps_fad829722795c52c",
      "kind": "benchmark",
      "use_case_id": "airport-fod-detection",
      "use_case_ids": [
        "airport-fod-detection"
      ],
      "provider_id": null,
      "description": "Drone runway survey of an aerodrome or aeroclub field (short runway, orthophoto + condition report); a periodic drone survey, not a fixed FOD-detection system (C-DRONE price guide, France, observed 2026 range, excl. VAT)",
      "low": 900,
      "high": 2000,
      "currency": "EUR",
      "unit": "per campaign",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/airport-runway-inspection-drone-fod-regulations-price/",
      "as_of": "2026-09-30",
      "observed_at": "2026-10-25T22:32:28.284Z",
      "content_hash": "sha256:3a07e0adb93c0ea58eb0bf965dbbfad3085feea76e11cd5c71d1e05f9640df41",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 1007,
        "high": 2238,
        "fx": {
          "pair": "EUR/USD",
          "rate": 1.11881,
          "eur_per_usd": 0.89381,
          "rate_date": "2026-10-26",
          "source": "European Central Bank reference rates via Frankfurter",
          "source_url": "https://api.frankfurter.dev/v1/latest?base=USD"
        },
        "note": "Converted at the published reference rate on 2026-10-26, not at the price's as_of date. Indicative only."
      }
    },
    {
      "id": "po_20261025_a06d4eba63e9",
      "series_key": "ps_6b6b30b3c76b682c",
      "kind": "benchmark",
      "use_case_id": "airport-fod-detection",
      "use_case_ids": [
        "airport-fod-detection"
      ],
      "provider_id": null,
      "description": "Drone survey of a regional airport's runway and taxiways with a thermal pass; periodic survey, not continuous FOD detection (C-DRONE price guide, France, observed 2026 range, excl. VAT)",
      "low": 2500,
      "high": 6000,
      "currency": "EUR",
      "unit": "per campaign",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/airport-runway-inspection-drone-fod-regulations-price/",
      "as_of": "2026-09-30",
      "observed_at": "2026-10-25T22:32:28.284Z",
      "content_hash": "sha256:a06d4eba63e92d8ce53f263eb63877e3984f77ec3fde2c1517c652bf0ebfb9e4",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 2797,
        "high": 6713,
        "fx": {
          "pair": "EUR/USD",
          "rate": 1.11881,
          "eur_per_usd": 0.89381,
          "rate_date": "2026-10-26",
          "source": "European Central Bank reference rates via Frankfurter",
          "source_url": "https://api.frankfurter.dev/v1/latest?base=USD"
        },
        "note": "Converted at the published reference rate on 2026-10-26, not at the price's as_of date. Indicative only."
      }
    }
  ],
  "series": [
    {
      "series_key": "ps_fad829722795c52c",
      "kind": "benchmark",
      "use_case_id": "airport-fod-detection",
      "provider_id": null,
      "description": "Drone runway survey of an aerodrome or aeroclub field (short runway, orthophoto + condition report); a periodic drone survey, not a fixed FOD-detection system (C-DRONE price guide, France, observed 2026 range, excl. VAT)",
      "currency": "EUR",
      "unit": "per campaign",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/airport-runway-inspection-drone-fod-regulations-price/",
      "observations": 1,
      "first_observed_at": "2026-10-25T22:32:28.284Z",
      "last_observed_at": "2026-10-25T22:32:28.284Z",
      "current": true,
      "latest": {
        "low": 900,
        "high": 2000,
        "as_of": "2026-09-30",
        "id": "po_20261025_3a07e0adb93c"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-27T01:26:25.942Z",
        "result": "confirmed",
        "by": "automatic"
      }
    },
    {
      "series_key": "ps_6b6b30b3c76b682c",
      "kind": "benchmark",
      "use_case_id": "airport-fod-detection",
      "provider_id": null,
      "description": "Drone survey of a regional airport's runway and taxiways with a thermal pass; periodic survey, not continuous FOD detection (C-DRONE price guide, France, observed 2026 range, excl. VAT)",
      "currency": "EUR",
      "unit": "per campaign",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/airport-runway-inspection-drone-fod-regulations-price/",
      "observations": 1,
      "first_observed_at": "2026-10-25T22:32:28.284Z",
      "last_observed_at": "2026-10-25T22:32:28.284Z",
      "current": true,
      "latest": {
        "low": 2500,
        "high": 6000,
        "as_of": "2026-09-30",
        "id": "po_20261025_a06d4eba63e9"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-27T01:26:25.942Z",
        "result": "confirmed",
        "by": "automatic"
      }
    }
  ],
  "note": "Only one observation per series so far: we started recording every price on 2026-10-25 and re-check every source on a schedule. A trend appears when a re-checked source shows a different price (we never overwrite old observations).",
  "pagination": {
    "total": 2,
    "limit": 200,
    "offset": 0,
    "returned": 2,
    "next_offset": null,
    "next": null,
    "prev": null
  },
  "license": "Whirrwork (https://whirrwork.com), CC BY 4.0"
}