condition	mean	min	max
4 h after light	5.907605	5.65954	6.15567
8 h after light	7.73335	7.55408	7.91262
12 h after light	8.45679	8.19024	8.72334
4 h after dark	11.65935	11.3954	11.9233
8 h after dark	10.2066	10.1891	10.2241
12 h after dark	8.733195	8.4212	9.04519