condition	mean	min	max
0 h after light	9.222415	8.53575	9.90908
4 h after light	13.0304	11.0766	14.9842
8 h after light	18.4546	17.9562	18.953
4 h after dark	17.359099999999998	17.1138	17.6044
8 h after dark	18.700650000000003	17.405	19.9963
12 h after dark	11.67675	10.6521	12.7014