condition	mean	min	max
4 h after light	8.0994095	7.816692	8.382127
8 h after light	7.761546500000001	7.357725	8.165368
12 h after light	8.609734	8.573037	8.646431
4 h after dark	8.5106815	7.836403	9.18496
8 h after dark	8.795294	8.103292	9.487296
12 h after dark	7.960173	7.960173	7.960173