normalRange = new Rectangle(0, 0, graphWidth, graphHeight);
normalRange.setFillColor(normalRangeColor);
normalRange.setStrokeOpacity(0);
canvas.add(normalRange);
average = new Line(0, 0, 0, 0);
average.setStrokeWidth(pathWidth);
average.setStrokeColor(averageColor);
canvas.add(average);
minDot = new Circle(0, 0, 1);