anchor.diff:        }
         else if( axisFlag == 3 ) {
           // Size
  -        options.xAxis.title.text = 'Energy to travel to';
  +        options.xAxis.title.text = 'Delta-V';
           options.xAxis.type = '';        
         }
   
  -      options.series.push({color: "#AAAAFF", name: "Distance", data: distanceSeries});
  -      options.series.push({color: "#FFAABB", name: "Impact Prob", data: impactSeries});
  +      options.series.push({color: "#AAAAFF", name: "Approach Distance", data: distanceSeries});
  +      options.series.push({color: "#FFAABB", name: "Impact Probability", data: impactSeries});
         if( axisFlag != 1 ) {
  -        options.series.push({color: "#66A2D4", name: "Asteroid Size, x 100m", data: sizeSeries});
  +        options.series.push({color: "#66A2D4", name: "Size, x100m", data: sizeSeries});
         }
         if( axisFlag != 2 ) {
           options.series.push({color: "#FFF730", name: "Orbital Period", data: periodSeries});
         }
         if( axisFlag != 3 ) {
  -        options.series.push({color: "#20E7AC", name: "Energy", data: energySeries});
  +        options.series.push({color: "#20E7AC", name: "Delta-V", data: energySeries});
         }
   
         // alert("data series size: " + distanceSeries.length);
  
positive.code:         xAxis: {
              title: {
                  enabled: true,
                  text: 'Size (m)'
              },
              startOnTick: false,
              endOnTick: false,
              showLastLabel: true
          },
          series: []
      };
  
  
negative.code:           if( axisFlag != 3 ) {
              var tmpEnergy = [];
              tmpEnergy.push(baseAxis);
              // tmpEnergy.push(Math.round(d.delta_v));
              tmpEnergy.push(parseFloat(d.delta_v));
              if( useBubble ) {
  		          tmpEnergy.push(size); 
  	          }
  