condition	mean	min	max
4 h after light	31.74505	29.78	33.7101
8 h after light	17.35755	16.7267	17.9884
12 h after light	14.06315	12.9421	15.1842
4 h after dark	16.1006	15.5183	16.6829
8 h after dark	20.17145	19.8562	20.4867
12 h after dark	22.71075	22.2284	23.1931