condition	mean	min	max
4 h after light	7.566630000000001	7.293480000000001	7.9276800000000005
8 h after light	7.668506666666667	7.4835899999999995	8.026860000000001
12 h after light	7.644263333333334	7.30668	8.12011
4 h after dark	7.882903333333333	7.52723	8.48837
8 h after dark	7.839533333333333	7.45224	8.47602
12 h after dark	7.802709999999999	7.4637899999999995	8.40995