condition	mean	min	max
0 h after light	18.914450000000002	18.7038	19.1251
4 h after light	15.133500000000002	15.0332	15.2338
8 h after light	14.5598	14.0221	15.0975
4 h after dark	18.52545	15.8214	21.2295
8 h after dark	20.1254	19.9992	20.2516
12 h after dark	17.426099999999998	16.9856	17.8666