condition	mean	min	max
4 h after light	7.7659400000000005	7.46258	8.0693
8 h after light	7.22415	6.85182	7.59648
12 h after light	7.16817	7.05295	7.28339
4 h after dark	10.804535000000001	9.56947	12.0396
8 h after dark	11.2085	11.1796	11.2374
12 h after dark	10.153305	9.30781	10.9988