condition	mean	min	max
4 h after light	6.254736666666667	6.08134	6.45329
8 h after light	6.1736233333333335	6.14839	6.19324
12 h after light	6.264646666666667	5.97809	6.6306899999999995
4 h after dark	6.12942	6.10527	6.15207
8 h after dark	6.16943	6.03451	6.30344
12 h after dark	6.09254	6.03437	6.18246