condition	mean	min	max
4 h after light	7.78229	7.674510000000001	7.85792
8 h after light	7.928526666666667	7.646380000000001	8.210410000000001
12 h after light	7.642453333333334	7.55745	7.7573300000000005
4 h after dark	7.70035	7.5159199999999995	7.9203
8 h after dark	7.8384	7.68783	8.03978
12 h after dark	8.04206	7.79522	8.33186