condition	mean	min	max
4 h after light	8.576575	7.90158	9.25157
8 h after light	4.72911	4.47336	4.98486
12 h after light	4.846575	4.64861	5.04454
4 h after dark	5.693313333333333	5.36221	6.03188
8 h after dark	8.730566666666666	8.55186	8.88474
12 h after dark	8.82252	8.38019	9.56483