condition	mean	min	max
0 h after light	8.28803	8.00742	8.56864
4 h after light	8.30282	8.02945	8.57619
8 h after light	8.28871	8.10216	8.47526
4 h after dark	8.417815000000001	8.04304	8.79259
8 h after dark	7.897895	7.66227	8.13352
12 h after dark	8.607395	8.40028	8.81451