 const min = this.opsTimingData_[len - 1].cmd_time;

      const width = this.chartWidth_ - AXIS_PADDING_LEFT - AXIS_PADDING_RIGHT;
      const height = this.chartHeight_ - AXIS_PADDING_TOP - AXIS_PADDING_BOTTOM;

      const totalBarWidth = this.chartWidth_ - CHART_PADDING_LEFT -
          CHART_PADDING_RIGHT;
      const barWidth = Math.floor(totalBarWidth / len);
      const tickYInterval = height / (VERTICAL_TICKS - 1);
      let tickYPosition = 0;
      const tickValInterval = (max - min) / (VERTICAL_T