distance (cm) trial 1 trial 2 trial 3 trial 4 trial 5 trial 6 trial 7 trial 8 trial 9 trial 10 10 4.8 5.1 4.9 4.82 5 5.3 4.8 4.9 5.2 5 20 5.1 5 5.05 4.7 5.2 4.85 4.6 5 4.9 5.1 30 6.4 4.6 5.2 5.3 4.7 4.9 4.6 4.5 5 5.2 40 4.1 4.15 3.3 3.5 4.2 4.6 4.9 3.7 4 4.1 50 3.2 4.1 4.3 3.5 4.7 4.2 4.3 4.9 3.7 4.1 60 3.8 3.1 4.6 3.5 3.7 4.9 3 4.1 3.3 3.1 70 4.3 3.2 3.7 3.5 4 4.1 3.2 3.4 3.9 4.1 80 3.8 5.6 2.5 3 4.7 5 2.9 4.9 3.5 4.7 90 3.2 4.1 4.8 4.5 3.9 3.2 4.3 5.1 3.5 4.9 100 3.7 4.75 5 4 3.3 5.1 4.9 4.3 5.1 3.7