condition mean min max 4 h after light 156.2 156.2 156.2 8 h after light 131.6 99.3 163.9 12 h after light 153.45 130.7 176.2 4 h after dark 127.55000000000001 124.3 130.8 8 h after dark 100.80000000000001 76.9 124.7 12 h after dark 55.8 13.3 98.3