test temperature chart

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <script src="data.js"></script>
  <style>
    body {background:salmon;margin:0;padding:1rem;}
    svg {
      outline: 1px dotted #666;
      background: powderblue;
    }
  </style>
</head>
​
<body>
  <svg height="500" width="800"></svg>
  
  <script>
    console.log('test!', data)
  </script>
</body>
​
    

https://d3js.org/d3.v4.min.js