eSeries.
    this.minValue = Number.NaN; // The minimum value ever seen in this TimeSeries.
  };

  /**
   * Recalculate the min/max values for this <code>TimeSeries</code> object.
   *
   * This causes the graph to scale itself in the y-axis.
   */
  TimeSeries.prototype.resetBounds = function() {
    if (this.data.length) {
      // Walk through all data points, finding the min/max value
      this.maxValue = this.data[0][1];
      this.minValue = this.data[0][1];
      for (var i = 1; i < this.data.lengt