condition mean min max 0 h after light 55.7164 55.4066 56.0262 4 h after light 50.7829 44.9107 56.6551 8 h after light 104.2157 96.5144 111.917 4 h after dark 145.688 118.275 173.101 8 h after dark 90.9448 83.9513 97.9383 12 h after dark 67.46595 53.5353 81.3966