condition mean min max 4 h after light 5.31142 5.20633 5.37404 8 h after light 5.534356666666667 5.4570300000000005 5.63647 12 h after light 5.731623333333333 5.42244 5.98491 4 h after dark 5.722223333333333 5.69296 5.75969 8 h after dark 5.494306666666667 5.3474699999999995 5.62571 12 h after dark 5.1114500000000005 4.96361 5.24835