condition	mean	min	max
0 h after light	6.420775	5.20516	7.63639
4 h after light	12.3863	10.0129	14.7597
8 h after light	6.72281	6.15307	7.29255
4 h after dark	12.43914	9.89678	14.9815
8 h after dark	18.342799999999997	16.7476	19.938
12 h after dark	9.940925	8.88405	10.9978