Evolución mediciones nitratos en agua (sobre 20)

by greenpeace

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.bundle.min.js" defer></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-deferred@1.0.2" defer></script>
<div class="chart-container" style="position: relative; height:auto; width:100%">
  <canvas id="bar_chart_5" width="350" height="250"></canvas>
</div>
<script>
  document.addEventListener("DOMContentLoaded", function(event) {
    var ctx = document.getElementById("bar_chart_5");
    var bar_chart_5 = new Chart(ctx, {
      type: 'bar',
      data: {
        labels: ["2016", "2017", "2018", "2019", "2020"],
        datasets: [{
            label: 'Mediciones entre 25 y 50 mg/l (riesgo contaminación)',
            data: [11.2, 12.78, 11.58, 12.01, 14.82],
            backgroundColor: 'rgba(255, 195, 49, 0.85)'
          },
          {
            label: 'Mediciones de más de 50 mg/l (agua contaminada / NO POTABLE)',
            data: [3.71, 4.62, 4.84, 4.72, 4.94],
            backgroundColor: 'rgba(134, 139, 134, 0.85)'
          }
        ]
      },
      options: {
        title: {
          display: true,
          text: 'Evolución mediciones nitratos en agua',
          fontSize: 16,
          fontFamily: '"Work Sans",sans-serif',
          fontColor: '#212529'
        },
        legend: {
          display: true,
          labels: {
            fontName: '"Work Sans",sans-serif',
            fontColor: '#212529',
            fontSize: 13
          }
        },
        layout: {
          padding: {
            bottom: 20     
          }
        },
        scales: {
          yAxes: [{
            stacked: true,
            ticks: {
              fontFamily: '"Work Sans",sans-serif',
              fontColor: '#212529'
            },
            scaleLabel: {
              display: true,
              labelString: '%',
              fontFamily: '"Work Sans",sans-serif',
              fontColor: '#212529'
            }
          }],
          xAxes: [{
           ...