Bar Chart with Custom Tooltip Showing Custom dimensions

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/require.js/2.1.19/require.min.js"></script>
<script src="//webdetails.github.io/ccc/charts/lib/amd/require.config.js"></script>
<script src="//webdetails.github.io/ccc/charts/lib/q01-01.js"></script>
<div id="cccExample" />

JavaScript

require([
  "ccc/pvc", 
  "ccc/def", 
  "ccc/protovis"
], function(pvc, def, pv) {

    new pvc.BarChart({
        canvas: "cccExample",
        width:  600,
        height: 400,    
        title: "Bar Chart with Custom Tooltip",
        animate:    false,
        selectable: true,
        hoverable:  true,
        legend:     true,
        seriesRole: 'city',
        categoryRole: 'day',
        valueRole: 'count',
        readers: [{names: 'city, day, count'}]
    })
    .setData(relational_01, { crosstabMode: false })
    .render();
});