{
  "total": 2,
  "source": "d1",
  "tracking_since": "2026-10-25T12:38:37.716Z",
  "source_rechecks": {
    "rows": 332,
    "series": 250,
    "last_checked_at": "2026-10-25T13:38:37.000Z",
    "latest_result_counts": {
      "confirmed": 240,
      "unreachable": 5,
      "needs_review": 4,
      "changed": 1
    },
    "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_5053e8af77c7",
      "series_key": "ps_726cf02fdcbe7d3f",
      "kind": "benchmark",
      "use_case_id": "autonomous-boats-ferry",
      "use_case_ids": [
        "autonomous-boats-ferry"
      ],
      "provider_id": null,
      "description": "MF Estelle autonomous electric passenger ferry, Stockholm (Kungsholmen–Södermalm): one-hour ticket, 20 SEK students/pensioners to 35 SEK adults, at launch",
      "low": 20,
      "high": 35,
      "currency": "SEK",
      "unit": "per trip",
      "region": "SE",
      "source_url": "https://www.eiturbanmobility.eu/press-corner/on-8-june-the-worlds-first-commercial-autonomous-electric-passenger-ferry-will-be-launched-in-stockholm/",
      "as_of": "2023-06-06",
      "observed_at": "2026-10-26T05:30:51.484Z",
      "content_hash": "sha256:5053e8af77c79e434ad4c0eef17a50f1522ba5ca01a5aad1b71fecc8637f602e",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 2.01,
        "high": 3.52,
        "fx": {
          "pair": "SEK/USD",
          "rate": 0.100557,
          "sek_per_usd": 9.9446,
          "rate_date": "2026-10-23",
          "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 2026-10-23, not at the price's as_of date. Indicative only."
      }
    },
    {
      "id": "po_20261026_957502d83362",
      "series_key": "ps_c31b22715ca04253",
      "kind": "benchmark",
      "use_case_id": "autonomous-boats-ferry",
      "use_case_ids": [
        "autonomous-boats-ferry"
      ],
      "provider_id": null,
      "description": "MF Estelle autonomous ferry, Stockholm: the five-minute crossing initially cost 35 kronor; Mitt i reports Torghatten closed the route in 2026 for lack of passengers (historical fare)",
      "low": 35,
      "high": 35,
      "currency": "SEK",
      "unit": "per trip",
      "region": "SE",
      "source_url": "https://www.mitti.se/nyheter/sjalvkorande-elfarjan-slutar-trafikera-riddarfjarden-6.3.360017.4426e3ed4c",
      "as_of": "2026-04-29",
      "observed_at": "2026-10-26T05:30:51.484Z",
      "content_hash": "sha256:957502d83362eb4828dec6292cdf18682da8ed5a5c4fe9e6ee7221cf0adb14a4",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 3.52,
        "high": 3.52,
        "fx": {
          "pair": "SEK/USD",
          "rate": 0.100557,
          "sek_per_usd": 9.9446,
          "rate_date": "2026-10-23",
          "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 2026-10-23, not at the price's as_of date. Indicative only."
      }
    }
  ],
  "series": [
    {
      "series_key": "ps_726cf02fdcbe7d3f",
      "kind": "benchmark",
      "use_case_id": "autonomous-boats-ferry",
      "provider_id": null,
      "description": "MF Estelle autonomous electric passenger ferry, Stockholm (Kungsholmen–Södermalm): one-hour ticket, 20 SEK students/pensioners to 35 SEK adults, at launch",
      "currency": "SEK",
      "unit": "per trip",
      "region": "SE",
      "source_url": "https://www.eiturbanmobility.eu/press-corner/on-8-june-the-worlds-first-commercial-autonomous-electric-passenger-ferry-will-be-launched-in-stockholm/",
      "observations": 1,
      "first_observed_at": "2026-10-26T05:30:51.484Z",
      "last_observed_at": "2026-10-26T05:30:51.484Z",
      "current": true,
      "latest": {
        "low": 20,
        "high": 35,
        "as_of": "2023-06-06",
        "id": "po_20261026_5053e8af77c7"
      },
      "trend": null,
      "last_rechecked": null
    },
    {
      "series_key": "ps_c31b22715ca04253",
      "kind": "benchmark",
      "use_case_id": "autonomous-boats-ferry",
      "provider_id": null,
      "description": "MF Estelle autonomous ferry, Stockholm: the five-minute crossing initially cost 35 kronor; Mitt i reports Torghatten closed the route in 2026 for lack of passengers (historical fare)",
      "currency": "SEK",
      "unit": "per trip",
      "region": "SE",
      "source_url": "https://www.mitti.se/nyheter/sjalvkorande-elfarjan-slutar-trafikera-riddarfjarden-6.3.360017.4426e3ed4c",
      "observations": 1,
      "first_observed_at": "2026-10-26T05:30:51.484Z",
      "last_observed_at": "2026-10-26T05:30:51.484Z",
      "current": true,
      "latest": {
        "low": 35,
        "high": 35,
        "as_of": "2026-04-29",
        "id": "po_20261026_957502d83362"
      },
      "trend": null,
      "last_rechecked": null
    }
  ],
  "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"
}