condition	mean	min	max
4 h after light	7.965553333333333	7.81204	8.11317
8 h after light	8.73709	8.61788	8.96781
12 h after light	8.307676666666667	8.22178	8.43866
4 h after dark	8.519680000000001	8.42928	8.58421
8 h after dark	8.62209	8.48484	8.88518
12 h after dark	8.177	7.84892	8.37884