{
  "total": 5,
  "source": "d1",
  "tracking_since": "2026-10-25T12:38:37.716Z",
  "source_rechecks": {
    "rows": 1246,
    "series": 879,
    "last_checked_at": "2026-10-27T21:32:00.000Z",
    "latest_result_counts": {
      "confirmed": 800,
      "changed": 6,
      "unreachable": 44,
      "needs_review": 2,
      "partial": 7,
      "not_found_on_page": 20
    },
    "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_00967bde081c",
      "series_key": "ps_29405d98ff2027db",
      "kind": "benchmark",
      "use_case_id": "wind-turbine-blade-inspection",
      "use_case_ids": [
        "wind-turbine-blade-inspection"
      ],
      "provider_id": null,
      "description": "Standard visual drone blade inspection",
      "low": 300,
      "high": 600,
      "currency": "USD",
      "unit": "per turbine",
      "region": "US",
      "source_url": "https://www.skyvisor.ai/wind-turbine-inspection-costs-roi/",
      "as_of": "2026-10",
      "observed_at": "2026-10-25T12:38:37.716Z",
      "content_hash": "sha256:00967bde081c337c8bee5b8d95d70fa6ad9341ef14551fae703711b67516bd92",
      "supersedes": null,
      "origin": "backfill",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 300,
        "high": 600,
        "note": "Already in target currency; no conversion."
      }
    },
    {
      "id": "po_20261025_77563deba2f8",
      "series_key": "ps_e9fa28824640c99c",
      "kind": "provider_published",
      "use_case_id": null,
      "use_case_ids": [
        "water-tank-reservoir-inspection",
        "dam-spillway-inspection",
        "wind-turbine-blade-inspection",
        "roof-inspection-drone"
      ],
      "provider_id": "drone-services-ireland",
      "description": "ROV underwater inspection",
      "low": 900,
      "high": null,
      "currency": "EUR",
      "unit": "per day",
      "region": "",
      "source_url": "https://www.droneservicesireland.ie/drone-rov-underwater-inspection",
      "as_of": "2026-10",
      "observed_at": "2026-10-25T12:38:37.716Z",
      "content_hash": "sha256:77563deba2f8aaaf1953988e114fdd62b125c98062549a432a121bcbec92aad2",
      "supersedes": null,
      "origin": "backfill",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 1004,
        "high": null,
        "fx": {
          "pair": "EUR/USD",
          "rate": 1.115,
          "eur_per_usd": 0.89686,
          "rate_date": "2026-10-27",
          "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 2026-10-27, not at the price's as_of date. Indicative only."
      }
    },
    {
      "id": "po_20261025_c59b4c5935ca",
      "series_key": "ps_2eff385121923768",
      "kind": "benchmark",
      "use_case_id": "wind-turbine-blade-inspection",
      "use_case_ids": [
        "wind-turbine-blade-inspection"
      ],
      "provider_id": null,
      "description": "Drone inspection within a farm campaign (excl. thermography/LPS)",
      "low": 350,
      "high": 700,
      "currency": "EUR",
      "unit": "per turbine",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/wind-turbine-drone-inspection-method-cost/",
      "as_of": "2026-10",
      "observed_at": "2026-10-25T12:38:37.716Z",
      "content_hash": "sha256:c59b4c5935ca2d9798c77e05a183dc8175793fa23df280c45cd42eee25b9c789",
      "supersedes": null,
      "origin": "backfill",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 390,
        "high": 781,
        "fx": {
          "pair": "EUR/USD",
          "rate": 1.115,
          "eur_per_usd": 0.89686,
          "rate_date": "2026-10-27",
          "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 2026-10-27, not at the price's as_of date. Indicative only."
      }
    },
    {
      "id": "po_20261025_dcde1731995c",
      "series_key": "ps_7f7d1001949981da",
      "kind": "benchmark",
      "use_case_id": "wind-turbine-blade-inspection",
      "use_case_ids": [
        "wind-turbine-blade-inspection"
      ],
      "provider_id": null,
      "description": "Drone inspection of an isolated turbine",
      "low": 600,
      "high": 1200,
      "currency": "EUR",
      "unit": "per turbine",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/wind-turbine-drone-inspection-method-cost/",
      "as_of": "2026-10",
      "observed_at": "2026-10-25T12:38:37.716Z",
      "content_hash": "sha256:dcde1731995c95d08a7ca62281871cb9be4fe10b604237df9bceabc9e68b08e0",
      "supersedes": null,
      "origin": "backfill",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 669,
        "high": 1338,
        "fx": {
          "pair": "EUR/USD",
          "rate": 1.115,
          "eur_per_usd": 0.89686,
          "rate_date": "2026-10-27",
          "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 2026-10-27, not at the price's as_of date. Indicative only."
      }
    },
    {
      "id": "po_20261025_1fcc143931d7",
      "series_key": "ps_7fb71e45d7219606",
      "kind": "provider_published",
      "use_case_id": "wind-turbine-blade-inspection",
      "use_case_ids": [
        "wind-turbine-blade-inspection"
      ],
      "provider_id": "luftling",
      "description": "Visual rotor blade inspection of a wind turbine by drone, net, starting price",
      "low": 500,
      "high": null,
      "currency": "EUR",
      "unit": "per turbine",
      "region": "DE",
      "source_url": "https://luftling.de/wind-rotorblattinspektion/",
      "as_of": "2026-10-25",
      "observed_at": "2026-10-25T18:35:04.403Z",
      "content_hash": "sha256:1fcc143931d722437b97910d74df791c58db2a4ddd20c6f8ef58fdfdfed87824",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 558,
        "high": null,
        "fx": {
          "pair": "EUR/USD",
          "rate": 1.115,
          "eur_per_usd": 0.89686,
          "rate_date": "2026-10-27",
          "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 2026-10-27, not at the price's as_of date. Indicative only."
      }
    }
  ],
  "series": [
    {
      "series_key": "ps_29405d98ff2027db",
      "kind": "benchmark",
      "use_case_id": "wind-turbine-blade-inspection",
      "provider_id": null,
      "description": "Standard visual drone blade inspection",
      "currency": "USD",
      "unit": "per turbine",
      "region": "US",
      "source_url": "https://www.skyvisor.ai/wind-turbine-inspection-costs-roi/",
      "observations": 1,
      "first_observed_at": "2026-10-25T12:38:37.716Z",
      "last_observed_at": "2026-10-25T12:38:37.716Z",
      "current": true,
      "latest": {
        "low": 300,
        "high": 600,
        "as_of": "2026-10",
        "id": "po_20261025_00967bde081c"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-27T05:28:28.477Z",
        "result": "confirmed",
        "by": "automatic"
      }
    },
    {
      "series_key": "ps_e9fa28824640c99c",
      "kind": "provider_published",
      "use_case_id": null,
      "provider_id": "drone-services-ireland",
      "description": "ROV underwater inspection",
      "currency": "EUR",
      "unit": "per day",
      "region": "",
      "source_url": "https://www.droneservicesireland.ie/drone-rov-underwater-inspection",
      "observations": 1,
      "first_observed_at": "2026-10-25T12:38:37.716Z",
      "last_observed_at": "2026-10-25T12:38:37.716Z",
      "current": true,
      "latest": {
        "low": 900,
        "high": null,
        "as_of": "2026-10",
        "id": "po_20261025_77563deba2f8"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-27T05:28:28.477Z",
        "result": "confirmed",
        "by": "automatic"
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    },
    {
      "series_key": "ps_2eff385121923768",
      "kind": "benchmark",
      "use_case_id": "wind-turbine-blade-inspection",
      "provider_id": null,
      "description": "Drone inspection within a farm campaign (excl. thermography/LPS)",
      "currency": "EUR",
      "unit": "per turbine",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/wind-turbine-drone-inspection-method-cost/",
      "observations": 1,
      "first_observed_at": "2026-10-25T12:38:37.716Z",
      "last_observed_at": "2026-10-25T12:38:37.716Z",
      "current": true,
      "latest": {
        "low": 350,
        "high": 700,
        "as_of": "2026-10",
        "id": "po_20261025_c59b4c5935ca"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-27T05:28:28.477Z",
        "result": "confirmed",
        "by": "automatic"
      }
    },
    {
      "series_key": "ps_7f7d1001949981da",
      "kind": "benchmark",
      "use_case_id": "wind-turbine-blade-inspection",
      "provider_id": null,
      "description": "Drone inspection of an isolated turbine",
      "currency": "EUR",
      "unit": "per turbine",
      "region": "FR",
      "source_url": "https://c-drone.fr/en/guides/wind-turbine-drone-inspection-method-cost/",
      "observations": 1,
      "first_observed_at": "2026-10-25T12:38:37.716Z",
      "last_observed_at": "2026-10-25T12:38:37.716Z",
      "current": true,
      "latest": {
        "low": 600,
        "high": 1200,
        "as_of": "2026-10",
        "id": "po_20261025_dcde1731995c"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-27T05:28:28.477Z",
        "result": "confirmed",
        "by": "automatic"
      }
    },
    {
      "series_key": "ps_7fb71e45d7219606",
      "kind": "provider_published",
      "use_case_id": "wind-turbine-blade-inspection",
      "provider_id": "luftling",
      "description": "Visual rotor blade inspection of a wind turbine by drone, net, starting price",
      "currency": "EUR",
      "unit": "per turbine",
      "region": "DE",
      "source_url": "https://luftling.de/wind-rotorblattinspektion/",
      "observations": 1,
      "first_observed_at": "2026-10-25T18:35:04.403Z",
      "last_observed_at": "2026-10-25T18:35:04.403Z",
      "current": true,
      "latest": {
        "low": 500,
        "high": null,
        "as_of": "2026-10-25",
        "id": "po_20261025_1fcc143931d7"
      },
      "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": 5,
    "limit": 200,
    "offset": 0,
    "returned": 5,
    "next_offset": null,
    "next": null,
    "prev": null
  },
  "license": "Whirrwork (https://whirrwork.com), CC BY 4.0"
}