condition	mean	min	max
0 h after light	17.64925	17.2185	18.08
4 h after light	7.186265	5.67488	8.69765
8 h after light	4.67071	4.4191	4.92232
4 h after dark	13.05705	12.5993	13.5148
8 h after dark	11.55235	11.1908	11.9139
12 h after dark	15.500250000000001	14.4383	16.5622