condition	mean	min	max
0 h after light	8.94941	8.92401	8.97481
4 h after light	13.4692	11.6329	15.3055
8 h after light	12.566500000000001	11.8094	13.3236
4 h after dark	6.892765	6.56391	7.22162
8 h after dark	6.6173649999999995	5.92965	7.30508
12 h after dark	6.971080000000001	6.25213	7.69003