condition	mean	min	max
4 h after light	15.97035	15.2915	16.6492
8 h after light	6.22304	4.68219	7.76389
12 h after light	2.15061	1.98661	2.31461
4 h after dark	2.697385	2.6181	2.77667
8 h after dark	8.286205	7.44803	9.12438
12 h after dark	13.001750000000001	11.2727	14.7308