condition	mean	min	max
4 h after light	9.320415	7.85833	10.7825
8 h after light	6.3203949999999995	6.20348	6.43731
12 h after light	6.02289	5.98726	6.05852
4 h after dark	11.9713	11.0386	13.2637
8 h after dark	12.0459	9.3004	14.4271
12 h after dark	5.061603333333333	0.0	8.02297