condition	mean	min	max
2 h after light	14.847166666666666	10.5388	19.7493
6 h after light	16.80775	12.3533	19.0323
10 h after light	13.673271666666666	7.26113	22.419
14 h after light	18.21065	10.7805	23.9976
18 h after light	16.767595	9.93297	22.8375
2 h after dark	12.58007	7.74088	17.3761