condition	mean	min	max
4 h after light	7.098493333333334	7.045439999999999	7.164110000000001
8 h after light	7.214113333333334	7.12498	7.292910000000001
12 h after light	7.15559	7.0467699999999995	7.31142
4 h after dark	6.89527	6.697260000000001	7.08035
8 h after dark	7.13503	6.887560000000001	7.27588
12 h after dark	7.1386666666666665	6.8566899999999995	7.32682