condition	mean	min	max
4 h after light	6.960473333333334	6.947960000000001	6.97093
8 h after light	7.480386666666667	7.360310000000001	7.5427
12 h after light	7.837646666666667	7.747560000000001	7.91213
4 h after dark	7.301943333333333	7.092569999999999	7.50758
8 h after dark	6.88661	6.67847	7.13214
12 h after dark	6.52086	6.3586	6.61688