Day / Hour Heatmap

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<!DOCTYPE html>
<meta charset="utf-8">
<html>
  <head>
    <style src="formatting.css"></style>
    <script src="https://d3js.org/d3.v3.js"></script>
    <script src="viz.js"></script>
  </head>
  <body>
    <div id="chart"></div>
  </body>
</html>
    

Modified http://d3js.org/d3.v3.js to a secure url

https://d3js.org/d3.v3.js