condition	mean	min	max
4 h after light	7.521023333333334	7.415310000000001	7.63455
8 h after light	7.50375	7.29715	7.80835
12 h after light	7.50462	7.29493	7.8289
4 h after dark	7.740006666666666	7.339289999999999	8.04637
8 h after dark	7.772923333333333	7.59237	8.07617
12 h after dark	7.294923333333334	6.980010000000001	7.5939