condition mean min max 4 h after light 5.497225 4.76414 6.23031 8 h after light 6.11253 5.46458 6.76048 12 h after light 5.558235 4.95152 6.16495 4 h after dark 5.1490849999999995 4.56366 5.73451 8 h after dark 8.42846 6.93657 9.92035 12 h after dark 8.430205 8.19484 8.66557