condition	mean	min	max
4 h after light	8.035746666666668	7.780130000000001	8.32356
8 h after light	8.53476	8.3102	8.827010000000001
12 h after light	8.30097	8.1463	8.39701
4 h after dark	8.005516666666667	7.838989999999999	8.14087
8 h after dark	7.856206666666667	7.66627	7.98953
12 h after dark	7.852200000000001	7.77378	7.937810000000001