Sachsen - 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-sn-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-sn-14627000-14627090', 10], ['de-sn-14627000-14627120', 11],
        ['de-sn-14625000-14625480', 12], ['de-sn-14625000-14625010', 13],
        ['de-sn-14627000-14627200', 14], ['de-sn-14627000-14627190', 15],
        ['de-sn-14524000-14524240', 16], ['de-sn-14627000-14627020', 17],
        ['de-sn-14521000-14521140', 18], ['de-sn-14625000-14625640', 19],
        ['de-sn-14625000-14625330', 20], ['de-sn-14628000-14628070', 21],
        ['de-sn-14628000-14628270', 22], ['de-sn-14625000-14625340', 23],
        ['de-sn-14625000-14625610', 24], ['de-sn-14729000-14729250', 25],
        ['de-sn-14729000-14729070', 26], ['de-sn-14625000-14625600', 27],
        ['de-sn-14625000-14625320', 28], ['de-sn-14627000-14627050', 29],
        ['de-sn-14627000-14627340', 30], ['de-sn-14625000-14625040', 31],
        ['de-sn-14625000-14625100', 32], ['de-sn-14625000-14625110', 33],
        ['de-sn-14625000-14625530', 34], ['de-sn-14729000-14729060', 35],
        ['de-sn-14522000-14522010', 36], ['de-sn-14522000-14522070', 37],
        ['de-sn-14523000-14523330', 38], ['de-sn-14521000-14521030', 39],
        ['de-sn-14521000-14521530', 40], ['de-sn-14523000-14523320', 41],
        ['de-sn-14523000-14523050', 42], ['de-sn-14523000-14523420', 43],
        ['de-sn-14625000-14625470', 44], ['de-sn-14625000-14625080', 45],
        ['de-sn-14625000-14625540', 46], ['de-sn-14625000-14625420', 47],
        ['de-sn-14625000-14625350', 48], ['de-sn-14626000-14626600', 49],
        ['de-sn-14626000-14626100', 50], ['de-sn-14625000-14625440', 51],
        ['de-sn-14521000-14521280', 52], ['de-sn-14521000-14521470',...