condition mean min max 0 h after light 3.376245 3.1053 3.64719 4 h after light 3.6477950000000003 3.60049 3.6951 8 h after light 2.4142349999999997 2.18001 2.64846 4 h after dark 4.69026 4.10146 5.27906 8 h after dark 5.564635 4.42931 6.69996 12 h after dark 3.9681500000000005 3.76582 4.17048