condition	mean	min	max
0 h after light	16.0614	15.4258	16.697
4 h after light	9.286485	8.69555	9.87742
8 h after light	7.713975	6.89305	8.5349
4 h after dark	12.4154	11.9345	12.8963
8 h after dark	11.7915	11.1457	12.4373
12 h after dark	13.64995	11.459	15.8409