condition	mean	min	max
4 h after light	8.5177	8.34808	8.71522
8 h after light	8.66262	8.53706	8.87941
12 h after light	8.67536	8.58125	8.802719999999999
4 h after dark	8.359163333333333	8.23723	8.56475
8 h after dark	8.218746666666666	8.07778	8.391739999999999
12 h after dark	8.061776666666667	7.97697	8.2266