flot.js

var data1 = [
  [1, 16.3],
  [2, 11.6],
  [3, 10.6]
];

$.plot("#container", [
    {
        data: data1.sortBy(function(n) {
            return n[0];
        }),
        label: 'RAPID3',
        points: { symbol: "square" }
    }, {
        data: data2.sortBy(function(n) {
            return n[0];
        }),
        label: 'HAQ',
        yaxis: 2,
        min: 0,
        max: 3,
        points: { symbol: "square" }
    }],
    {
        series: {
            lines: { show: true },
            points: { show: true }
        },
        xaxes: [
            {
                ticks: visitas.length + 2,
                tickSize: 1
            }
        ],
        yaxes: [
            {
                min: 0,
                max: 30,
                ticks: 10,
                tickSize: 3
            }, {
                alignTicksWithAxis: 'right',
                position: 'right',
                min: 0,
                max: 3
            }
        ],
    });