condition	mean	min	max
4 h after light	7.632876666666667	7.5898	7.692480000000001
8 h after light	7.811843333333334	7.7435	7.935910000000001
12 h after light	7.908676666666667	7.706410000000001	8.05003
4 h after dark	8.421850000000001	8.2384	8.516910000000001
8 h after dark	8.328906666666667	8.15685	8.427010000000001
12 h after dark	8.22797	8.12641	8.376719999999999