Data point labels - on graph - is not shown - for chrome - for Line chart

Please find my code below:

var aresp={
id: 'iresp',
type: 'line',
title: 'Respiratory Rate',
axisY: 'yresp',
axisX: 'xhour',
data: baseresp,
labels: {
font: '11px sans-serif',
fillStyle: 'red'
}
};

var apulse={
id: 'ipulse',
type: 'line',
title: 'Pulse',
axisY: 'ypulse',
axisX: 'xhour',
data: basepulse,
labels: {
font: '11px sans-serif',
fillStyle: 'red'
}
};

axes1=[aresp,apulse];
...
$('#vital-signs-graph').jqChart({

animation: { duration: 1 },
axes: axes1,

series: ser1
});