condition	mean	min	max
4 h after light	7.322533333333334	7.194560000000001	7.423260000000001
8 h after light	7.265106666666667	7.094310000000001	7.4729600000000005
12 h after light	7.176263333333333	7.069380000000001	7.277489999999999
4 h after dark	7.33469	7.14906	7.45627
8 h after dark	7.12351	6.94613	7.3793
12 h after dark	7.093520000000001	6.94995	7.184310000000001