condition	mean	min	max
4 h after light	7.443446666666667	7.30305	7.581980000000001
8 h after light	7.577226666666666	7.34857	7.90572
12 h after light	7.50826	7.34368	7.82821
4 h after dark	7.69614	7.46437	8.02166
8 h after dark	7.605976666666667	7.26893	8.08645
12 h after dark	7.41775	6.9809	7.7547