Nordrhein-Westfalen - Highcharts Maps

Highcharts Maps demo

HTML

<script src="https://code.highcharts.com/maps/highmaps.js"></script>
<script src="https://code.highcharts.com/maps/modules/exporting.js"></script>

<div id="container"></div>

CSS

#container {
    height: 500px;
    min-width: 310px;
    max-width: 800px;
    margin: 0 auto;
}

.loading {
    margin-top: 10em;
    text-align: center;
    color: gray;
}

JavaScript

(async () => {

    const topology = await fetch(
        'https://code.highcharts.com/mapdata/countries/de/de-nw-all-all.topo.json'
    ).then(response => response.json());

    // Prepare demo data. The data is joined to map using value of 'hc-key'
    // property by default. See API docs for 'joinBy' for more info on linking
    // data and map.
    const data = [
        ['de-nw-05382000-05382016', 10], ['de-nw-05334000-05334002', 11],
        ['de-nw-05758000-05758028', 12], ['de-nw-05166000-05166012', 13],
        ['de-nw-05166000-05166028', 14], ['de-nw-05374000-05374008', 15],
        ['de-nw-05374000-05374012', 16], ['de-nw-05566000-05566016', 17],
        ['de-nw-05766000-05766036', 18], ['de-nw-05370000-05370040', 19],
        ['de-nw-05362000-05362008', 20], ['de-nw-05362000-05362016', 21],
        ['de-nw-05166000-05166016', 22], ['de-nw-05562000-05562008', 23],
        ['de-nw-05562000-05562028', 24], ['de-nw-05962000-05962028', 25],
        ['de-nw-05374000-05374024', 26], ['de-nw-05566000-05566008', 27],
        ['de-nw-05566000-05566012', 28], ['de-nw-05154000-05154032', 29],
        ['de-nw-05758000-05758012', 30], ['de-nw-05758000-05758016', 31],
        ['de-nw-05758000-05758020', 32], ['de-nw-05754000-05754008', 33],
        ['de-nw-05754000-05754032', 34], ['de-nw-05124000-05124000', 35],
        ['de-nw-05374000-05374036', 36], ['de-nw-05962000-05962012', 37],
        ['de-nw-05120000-05120000', 38], ['de-nw-05954000-05954016', 39],
        ['de-nw-05554000-05554044', 40], ['de-nw-05554000-05554016', 41],
        ['de-nw-05378000-05378016', 42], ['de-nw-05378000-05378008', 43],
        ['de-nw-05766000-05766016', 44], ['de-nw-05378000-05378020', 45],
        ['de-nw-05370000-05370032', 46], ['de-nw-05370000-05370008', 47],
        ['de-nw-05554000-05554052', 48], ['de-nw-05554000-05554036', 49],
        ['de-nw-05554000-05554024', 50], ['de-nw-05554000-05554056', 51],
        ['de-nw-05162000-05162024', 52], ['de-nw-05162000-05162020',...