condition	mean	min	max
4 h after light	8.031213333333334	7.941510000000001	8.13142
8 h after light	7.8569233333333335	7.68375	8.08026
12 h after light	7.868543333333333	7.719589999999999	8.02774
4 h after dark	7.7852266666666665	7.61262	8.06895
8 h after dark	7.8873	7.7229600000000005	8.148819999999999
12 h after dark	7.54708	7.326410000000001	7.80094