condition mean min max 0 h after light 3.193865 2.79883 3.5889 4 h after light 5.023305 4.30481 5.7418 8 h after light 6.728865 5.92601 7.53172 4 h after dark 5.4007000000000005 4.17819 6.62321 8 h after dark 5.20127 4.55876 5.84378 12 h after dark 2.88252 2.18735 3.57769