{
  "total": 1,
  "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_20261026_07927a1768e2",
      "series_key": "ps_aa712cbd145850c8",
      "kind": "benchmark",
      "use_case_id": "tile-installation",
      "use_case_ids": [
        "tile-installation"
      ],
      "provider_id": null,
      "description": "Floor tile laying robot (地砖铺贴机器人, output ≥12 m²/h), CNY 24,573 per month: Guangzhou Construction Engineering Cost Management Station, monthly machinery rental reference price for June 2026 (穗建造价〔2026〕65号, issued 2026-07-14), pre-tax, labour not included",
      "low": 24573,
      "high": 24573,
      "currency": "CNY",
      "unit": "per month",
      "region": "CN-GD",
      "source_url": "https://zfcj.gz.gov.cn/attachment/8/8049/8049199/10904081.pdf",
      "as_of": "2026-07-14",
      "observed_at": "2026-10-26T23:28:49.463Z",
      "content_hash": "sha256:07927a1768e2720b6ddf1781eb53e28ba097e4b63b0049dff254a0e913e7f5ed",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 3685,
        "high": 3685,
        "fx": {
          "pair": "CNY/USD",
          "rate": 0.149981,
          "cny_per_usd": 6.6675,
          "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_aa712cbd145850c8",
      "kind": "benchmark",
      "use_case_id": "tile-installation",
      "provider_id": null,
      "description": "Floor tile laying robot (地砖铺贴机器人, output ≥12 m²/h), CNY 24,573 per month: Guangzhou Construction Engineering Cost Management Station, monthly machinery rental reference price for June 2026 (穗建造价〔2026〕65号, issued 2026-07-14), pre-tax, labour not included",
      "currency": "CNY",
      "unit": "per month",
      "region": "CN-GD",
      "source_url": "https://zfcj.gz.gov.cn/attachment/8/8049/8049199/10904081.pdf",
      "observations": 1,
      "first_observed_at": "2026-10-26T23:28:49.463Z",
      "last_observed_at": "2026-10-26T23:28:49.463Z",
      "current": true,
      "latest": {
        "low": 24573,
        "high": 24573,
        "as_of": "2026-07-14",
        "id": "po_20261026_07927a1768e2"
      },
      "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": 1,
    "limit": 200,
    "offset": 0,
    "returned": 1,
    "next_offset": null,
    "next": null,
    "prev": null
  },
  "license": "Whirrwork (https://whirrwork.com), CC BY 4.0"
}