condition	mean	min	max
4 h after light	7.3145999999999995	7.032369999999999	7.4702399999999995
8 h after light	7.22988	6.985289999999999	7.4110000000000005
12 h after light	7.679443333333333	7.36395	7.9370199999999995
4 h after dark	7.344873333333333	7.03026	7.563839999999999
8 h after dark	7.509296666666667	7.11707	7.732760000000001
12 h after dark	7.879506666666667	7.36975	8.170910000000001