condition mean min max 4 h after light 4.1646149999999995 3.78639 4.54284 8 h after light 4.408085 4.17051 4.64566 12 h after light 8.182245 8.17899 8.1855 4 h after dark 10.3048 10.2524 10.3572 8 h after dark 10.189039999999999 9.80228 10.5758 12 h after dark 8.30862 7.89493 8.72231