condition mean min max 4 h after light 11.232199999999999 10.9451 11.5193 8 h after light 15.6761 14.9892 16.363 12 h after light 10.07151 9.98802 10.155 4 h after dark 19.1477 17.9472 20.3482 8 h after dark 18.284750000000003 18.0945 18.475 12 h after dark 15.233450000000001 14.7977 15.6692