condition	mean	min	max
4 h after light	6.543839999999999	6.41916	6.760789999999999
8 h after light	6.29657	6.02843	6.5488599999999995
12 h after light	6.200076666666667	6.04471	6.32594
4 h after dark	6.50817	6.39125	6.573119999999999
8 h after dark	6.652776666666667	6.35975	7.02707
12 h after dark	6.601646666666666	6.49501	6.71703