condition	mean	min	max
2 h after light	18.7842	13.6736	24.3976
6 h after light	12.468895	8.77637	17.5281
10 h after light	12.79326	7.52258	19.2276
14 h after light	13.603028333333333	8.4557	18.0425
18 h after light	13.241438333333333	9.52253	17.995
2 h after dark	19.5244	12.4441	24.2132