condition	mean	min	max
4 h after light	6.387483333333333	6.3363	6.48837
8 h after light	6.23323	6.01655	6.50714
12 h after light	6.2107	5.94281	6.4081
4 h after dark	6.191416666666667	6.01455	6.34034
8 h after dark	5.988326666666667	5.91841	6.11483
12 h after dark	5.88916	5.71267	5.9861