condition mean min max 4 h after light 4.63574 4.5576 4.7643 8 h after light 4.594103333333333 4.54976 4.65315 12 h after light 4.66292 4.64093 4.69753 4 h after dark 4.746263333333333 4.5147900000000005 4.87863 8 h after dark 4.62733 4.57268 4.72052 12 h after dark 4.597476666666667 4.50994 4.722580000000001