condition	mean	min	max
4 h after light	7.1389499999999995	7.1011	7.161569999999999
8 h after light	7.10565	7.0178899999999995	7.2012
12 h after light	6.95502	6.6711100000000005	7.1364600000000005
4 h after dark	7.098166666666667	6.9773	7.32325
8 h after dark	7.064916666666667	6.92742	7.19083
12 h after dark	7.12416	7.091010000000001	7.165139999999999