in AzureCT/ServerSide/DisplayAvailability.js [377:385]
LineChart.prototype.getLongestValueWidth = function () {
this.context.font = this.font;
var longestValueWidth = 0;
for (var n = 0; n <= this.numYTicks; n++) {
var value = this.maxY - (n * this.unitsPerTickY);
longestValueWidth = Math.max(longestValueWidth, this.context.measureText(value).width);
}
return longestValueWidth;
};