condition	mean	min	max
4 h after light	15.801400000000001	15.5882	16.0146
8 h after light	13.54065	13.3287	13.7526
12 h after light	19.560299999999998	19.051	20.0696
4 h after dark	22.78943333333333	22.3314	23.3496
8 h after dark	19.820633333333333	18.7259	20.3686
12 h after dark	18.295833333333334	17.2494	19.1468