condition	mean	min	max
4 h after light	7.172775	6.72098	7.62457
8 h after light	7.132009999999999	7.06811	7.19591
12 h after light	8.417665	8.37839	8.45694
4 h after dark	9.4628	8.7121	10.2135
8 h after dark	9.29843	8.77529	9.82157
12 h after dark	9.059155	8.716	9.40231