condition mean min max 4 h after light 2.289415 1.62713 2.9517 8 h after light 5.6308050000000005 5.3826 5.87901 12 h after light 7.931620000000001 7.42557 8.43767 4 h after dark 7.875795 7.65858 8.09301 8 h after dark 4.758675 4.71994 4.79741 12 h after dark 3.7385 3.59361 3.88339