condition	mean	min	max
4 h after light	20.636087500000002	17.548569	23.723606
8 h after light	22.9361305	20.097027	25.775234
12 h after light	16.1355915	12.571754	19.699429
4 h after dark	17.332779000000002	16.189056	18.476502
8 h after dark	18.910187	18.764767	19.055607
12 h after dark	18.556413	18.556413	18.556413