condition	mean	min	max
4 h after light	6.405754999999999	6.0962	6.71531
8 h after light	6.588205	6.17389	7.00252
12 h after light	7.39891	7.23395	7.56387
4 h after dark	8.500425	7.89764	9.10321
8 h after dark	8.971495	8.71604	9.22695
12 h after dark	9.188945	8.94851	9.42938