, new Date('2013-01-04T00:00:00Z'), new Date('2013-01-05T00:00:00Z'), new Date('2013-01-06T00:00:00Z')],
            ['sample', 30, 200, 100, 400, 150, 250],
            ['sample2', 130, 300, 200, 450, 250, 350]
          ]
        },
        axis : {
          x : {
            type : 'timeseries',
            tick : {
//              format : "%m/%d" // https://github.com/mbostock/d3/wiki/Time-Formatting#wiki-format
              format : "%e %b %y" // https://github.com/mbostock/d3/wiki/Time-Formatting#w