condition	mean	min	max
4 h after light	7.909115	7.38972	8.42851
8 h after light	6.054235	5.67258	6.43589
12 h after light	6.624560000000001	6.40936	6.83976
4 h after dark	8.736825	8.23625	9.2374
8 h after dark	9.246215	9.23419	9.25824
12 h after dark	8.271145	8.16328	8.37901