---
title: "Støjkort tile (no key): the Lden 1,5 m noise map for one source — the Danish 2022 round when loaded, else Miljøstyrelsen’s 2017 tiles — each band an alpha step on black"
method: GET
path: "/v1/demo/stoej/kort/{kilde}/{z}/{row}/{col}"
---

# Støjkort tile (no key): the Lden 1,5 m noise map for one source — the Danish 2022 round when loaded, else Miljøstyrelsen’s 2017 tiles — each band an alpha step on black

`GET /v1/demo/stoej/kort/{kilde}/{z}/{row}/{col}`

## Request

- Base URL: `https://api.grundfast.dk`
- URL: `https://api.grundfast.dk/v1/demo/stoej/kort/{kilde}/{z}/{row}/{col}`
- Auth: none required

The round drawn is the one the point answer (`/v1/miljoe/stoej`) uses for roads and rail, and is named in the `X-Stoej-Runde` response header; its bands and alphas are in `GET /v1/demo/stoej/kort/info`. Without `runde` the tile is the current round (cached one hour); with `runde` it is pinned to that round (cached 30 days) — 2017 is always drawable, 2022 only once loaded (else 503).

## Path parameters

- `kilde` 'vej' | 'jernbane', required
- `z` integer, required
- `row` integer, required
- `col` integer, required

## Query parameters

- `runde` 2017 | 2022

## Response `200`

256×256 PNG; alpha per band as in `/v1/demo/stoej/kort/info` (2017: 64/106/148/190/232 = 55–59 … 75+ dB Lden; 2022 roads 47/89/131/173/215 = 53–57 … 73+). Transparent = not mapped at or above the round’s lowest band (not "quiet").

## Other responses

- `400`: Error
- `404`: Error
- `502`: Error
- `503`: Error

---

[API](https://skmtc.dev/grundfast/apis/grundfast-api.md) · [All operations](https://skmtc.dev/grundfast/apis/grundfast-api/llms.txt) · [OpenAPI document](https://skmtc.dev/grundfast/apis/grundfast-api/revisions/ccef6e299bb5?raw)