condition mean min max 0 h after light 1.5517850000000002 1.3117 1.79187 4 h after light 1.549375 1.29602 1.80273 8 h after light 1.889525 1.53753 2.24152 4 h after dark 3.344995 3.00592 3.68407 8 h after dark 2.633585 2.56601 2.70116 12 h after dark 2.116725 1.82597 2.40748