condition	mean	min	max
4 h after light	18.02385	13.1591	22.8886
8 h after light	18.0897	16.7813	19.3981
12 h after light	19.8759	17.6327	22.1191
4 h after dark	23.336533333333332	22.3782	23.8858
8 h after dark	24.166999999999998	22.0279	27.2621
12 h after dark	17.911133333333336	16.5192	19.789