condition	mean	min	max
4 h after light	15.65015	15.1811	16.1192
8 h after light	13.8543	13.044	14.6646
12 h after light	14.82685	13.517	16.1367
4 h after dark	14.3103	14.1184	14.5022
8 h after dark	16.21385	15.258	17.1697
12 h after dark	17.63815	17.3236	17.9527