src/visual-data.js
function(groupName, totalSites, totalPages,
                                totalPageviews) {
            var format = d3.format(',d');
            // build
            var summary = 
              '<tr>' +
              '<td>' + groupName + '</td>' +
              '<td>' + format(totalPageviews) + '</td>' +
              '<td>' + format(totalPages) + '</td>' +
              //'<td>' + totalSites + '</td>' +
              '</tr>';

            return summary;
        }
function(groupName, totalSites, totalPages,
                                totalPageviews) {
            var format = d3.format(',d');
            // build
            var summary = 
              '<tr>' +
              '<td>' + groupName + '</td>' +
              '<td>' + format(totalPageviews) + '</td>' +
              '<td>' + format(totalPages) + '</td>' +
              //'<td>' + totalSites + '</td>' +
              '</tr>';

            return summary;
        }
function ( groupName , totalSites , totalPages , totalPageviews ) { var format = d3 . format ( ',d' ) ; // build var summary = '<tr>' + '<td>' + groupName + '</td>' + '<td>' + format ( totalPageviews ) + '</td>' + '<td>' + format ( totalPages ) + '</td>' + //'<td>' + totalSites + '</td>' + '</tr>' ; return summary ; }
build row for each table..

<tr>
<td>MOF</td>
<td>2089</td>
<td>345</td>
</tr>
build row for each table ..