condition	mean	min	max
4 h after light	18.3171505	15.792021	20.84228
8 h after light	13.059701	12.937663	13.181739
12 h after light	13.8679875	13.139038	14.596937
4 h after dark	13.923889500000001	12.821172	15.026607
8 h after dark	13.6626275	12.331079	14.994176
12 h after dark	15.509417	15.509417	15.509417