condition	mean	min	max
0 h after light	18.643050000000002	17.9858	19.3003
4 h after light	15.22415	14.8987	15.5496
8 h after light	13.92685	13.766	14.0877
4 h after dark	15.791500000000001	15.2819	16.3011
8 h after dark	16.12965	15.914	16.3453
12 h after dark	16.72835	13.9582	19.4985