delta/d w/d symbol 0.20 0.874 red_circle 0.06 1.09 red_circle 0.02 1.83 red_circle 0.002 2.55 red_circle 0.0002 3.00 red_circle 0.00609 1.75 blue_triangle 0.00472 1.92 blue_triangle 2.98e-3 2.10 blue_triangle 1.90e-3 2.37 blue_triangle