condition	mean	min	max
4 h after light	19.0556185	17.79583	20.315407
8 h after light	20.124796	19.62862	20.620972
12 h after light	21.690526	19.084893	24.296159
4 h after dark	34.132359	19.51355	48.751168
8 h after dark	25.2427705	20.965936	29.519605
12 h after dark	22.892819	22.892819	22.892819