condition	mean	min	max
4 h after light	8.086983333333333	7.88813	8.32958
8 h after light	7.854846666666667	7.58805	8.29058
12 h after light	8.27325	8.06199	8.4505
4 h after dark	8.0616	7.864960000000001	8.3675
8 h after dark	7.760046666666668	7.478960000000001	8.02242
12 h after dark	7.5659366666666665	7.408580000000001	7.79085