condition	mean	min	max
4 h after light	18.13695	15.8869	20.387
8 h after light	14.813500000000001	14.6674	14.9596
12 h after light	18.42385	17.884	18.9637
4 h after dark	30.67353333333333	25.564	35.1142
8 h after dark	23.836100000000002	18.6616	26.5196
12 h after dark	18.798633333333335	13.5963	22.7846