condition	mean	min	max
0 h after light	7.029035	6.82067	7.2374
4 h after light	5.27899	4.43998	6.118
8 h after light	3.875545	3.71275	4.03834
4 h after dark	6.095065	5.21257	6.97756
8 h after dark	6.596465	5.48419	7.70874
12 h after dark	7.49813	6.9655	8.03076