condition	mean	min	max
4 h after light	6.931839999999999	6.810969999999999	7.12811
8 h after light	6.72199	6.5195	7.070589999999999
12 h after light	6.8507066666666665	6.44038	7.50045
4 h after dark	7.127876666666667	6.808330000000001	7.75219
8 h after dark	7.199136666666667	6.67943	7.905819999999999
12 h after dark	7.461033333333333	7.11787	7.6722600000000005