condition	mean	min	max
4 h after light	7.55366	7.33529	7.9382399999999995
8 h after light	7.5400833333333335	7.48049	7.62374
12 h after light	7.345633333333334	7.2721800000000005	7.404310000000001
4 h after dark	7.630636666666667	7.487660000000001	7.71045
8 h after dark	7.62034	7.493289999999999	7.84674
12 h after dark	7.428563333333334	7.29018	7.68625