condition	mean	min	max
4 h after light	7.80938	7.6329199999999995	7.90782
8 h after light	8.025153333333334	7.9331	8.12188
12 h after light	8.152003333333333	8.067739999999999	8.216460000000001
4 h after dark	7.6236266666666666	7.54587	7.693860000000001
8 h after dark	7.282830000000001	7.18533	7.337910000000001
12 h after dark	7.5522366666666665	7.362589999999999	7.854139999999999