condition	mean	min	max
0 h after light	7.05016	6.56237	7.53795
4 h after light	6.4984649999999995	6.25923	6.7377
8 h after light	6.88269	6.83416	6.93122
4 h after dark	8.33863	8.00305	8.67421
8 h after dark	7.572405	6.7136	8.43121
12 h after dark	7.138535	7.07094	7.20613