condition	mean	min	max
4 h after light	15.6154	15.0732	16.1576
8 h after light	12.185300000000002	12.063	12.3076
12 h after light	14.347850000000001	13.3226	15.3731
4 h after dark	18.54215	16.6603	20.424
8 h after dark	17.800800000000002	17.4475	18.1541
12 h after dark	19.4206	19.1009	19.7403