condition	mean	min	max
0 h after light	16.34745	15.2689	17.426
4 h after light	17.1186	16.837	17.4002
8 h after light	18.24295	16.1	20.3859
4 h after dark	25.315849999999998	23.6906	26.9411
8 h after dark	25.1328	24.5428	25.7228
12 h after dark	20.7247	18.0937	23.3557