condition	mean	min	max
4 h after light	7.51434	7.441339999999999	7.6133
8 h after light	7.56394	7.47788	7.73385
12 h after light	7.4196333333333335	7.22003	7.544789999999999
4 h after dark	7.723136666666666	7.669389999999999	7.81314
8 h after dark	7.793853333333333	7.63055	7.97094
12 h after dark	7.995233333333334	7.912960000000001	8.15063