[visualization-api] Charts won't display when I use this particular object key value in addColumn

[David Koch]

So I'm trying to create a google pie chart from an array of objects. 

Here is an example:

{title: "Robert Olson - Debate Paper 2017-18 - 489494 - Google Docs", url: 
"https://docs.google.com/document/d/16P-9H6iJPj4LHEJW3SVAc_k7Q6T8zCPLJCTCLwL9DqQ/edit";,
 
time: 42.812, seconds: " 43s"}

whenever i make a column from the time key/value pair, the chart appears 
and works fine. Like this:
 
data.addColumn('number', 'Time');

However when I used the seconds, the chart doesn't show. Any help would be 
appreciated. 

Here is my code:

google.charts.load('current', {'packages':['corechart', 'timeline']});
google.charts.setOnLoadCallback(drawChart);

function drawChart() {
    // Create the data table
    var data = new google.visualization.DataTable();
    data.addColumn('string', 'Title');
    data.addColumn('string', 'Time');

    for(var i=0;i<sitesData.length;i+=1){
        data.addRow([sitesData[i].title, sitesData[i].seconds]);
 
    }
    // Set chart options
    var options = {'title':'What links I looked At',
        'width':1000,
        'height':600,
        pieHole: 0.3
    };
    // Instantiate and draw our chart, passing in some options.
    var chart = new 
google.visualization.PieChart(document.getElementById('chart_div'));
    chart.draw(data, options);

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