condition mean min max 4 h after light 5.006836666666667 4.40267 5.3415300000000006 8 h after light 5.441303333333333 4.77873 5.968719999999999 12 h after light 6.749936666666667 6.1916 7.5077300000000005 4 h after dark 6.166626666666667 5.81276 6.8049800000000005 8 h after dark 5.83181 5.27551 6.24819 12 h after dark 5.27629 4.9385900000000005 5.57405