condition	mean	min	max
0 h after light	19.71275	17.5051	21.9204
4 h after light	10.607685	9.75427	11.4611
8 h after light	5.055425	4.19435	5.9165
4 h after dark	6.83144	6.04414	7.61874
8 h after dark	11.06201	9.89972	12.2243
12 h after dark	18.09105	14.2952	21.8869