condition	mean	min	max
4 h after light	14.9744	12.9246	17.0242
8 h after light	13.9057	13.8247	13.9867
12 h after light	15.0982	14.7156	15.4808
4 h after dark	18.875233333333334	18.128	19.6885
8 h after dark	18.2427	16.8102	19.922
12 h after dark	14.7953	14.45	15.2375