condition	mean	min	max
0 h after light	5.90714	5.59185	6.22243
4 h after light	9.43755	8.95087	9.92423
8 h after light	19.24635	18.559	19.9337
4 h after dark	22.10785	21.569	22.6467
8 h after dark	12.3022	10.9058	13.6986
12 h after dark	6.44534	4.93471	7.95597