condition	mean	min	max
4 h after light	7.488943333333333	7.21104	7.76308
8 h after light	7.6933066666666665	7.43956	7.94659
12 h after light	7.73007	7.634410000000001	7.785139999999999
4 h after dark	7.373080000000001	7.27575	7.47341
8 h after dark	7.153696666666667	6.99268	7.45942
12 h after dark	7.302363333333334	6.926260000000001	7.762560000000001