{
  "query": {
    "country": "ES",
    "fuel": "diesel",
    "days": 30,
    "area_key": "ALL",
    "item": "diesel"
  },
  "status": "ok",
  "currency": "EUR",
  "unit": "per litre",
  "series": [
    {
      "date": "2026-10-13",
      "median": 1.919,
      "typical_low": 1.76,
      "typical_high": 1.999,
      "sample_size": 10775
    },
    {
      "date": "2026-10-14",
      "median": 1.92,
      "typical_low": 1.759,
      "typical_high": 1.999,
      "sample_size": 10774
    }
  ],
  "period": {
    "from": "2026-10-13",
    "to": "2026-10-14"
  },
  "change": {
    "from_median": 1.919,
    "to_median": 1.92,
    "absolute": 0.001,
    "percent": 0.1
  },
  "price_type": "posted_pump_price",
  "source": {
    "id": "es-fuel",
    "name": "Precios de carburantes en las estaciones de servicio terrestres",
    "publisher": "Ministerio para la Transición Ecológica y el Reto Demográfico (Geoportal de hidrocarburos), via datos.gob.es",
    "licence": "Spanish public-sector information reuse terms (Ley 37/2007, RD 1495/2011): reuse allowed with the source and update date cited. Exact licence text to be confirmed.",
    "licence_url": "https://datos.gob.es/en/catalogo/e05068001-precio-de-carburantes-en-las-gasolineras-espanolas",
    "attribution": "Source: Ministerio para la Transición Ecológica y el Reto Demográfico – precios de carburantes (datos.gob.es).",
    "url": "https://geoportalgasolineras.es/"
  },
  "library": {
    "first_date": "2026-10-13",
    "last_date": "2026-10-14",
    "days_collected": 2,
    "days_since_last_snapshot": 0
  },
  "method": "Once a day ProofPrice takes a snapshot of the official source and stores, for each area and item, the median, 10th–90th percentile and count. Days with fewer than 5 records are not shown.",
  "method_url": "https://proofprice.com/method",
  "summary": "Diesel in mainland Spain and the Balearics: median €1.92 per litre on 2026-10-14, up 0.1% since 2026-10-13 (€1.919). 2 daily snapshots of Ministerio para la Transición Ecológica y el Reto Demográfico (Geoportal de hidrocarburos), via datos.gob.es.",
  "notice": "Information, not an offer. Each point is that day's snapshot of posted prices."
}