condition	mean	min	max
4 h after light	18.913233	18.913233	18.913233
8 h after light	18.130563000000002	17.593046	18.66808
12 h after light	19.1336325	18.913233	19.354032
4 h after dark	22.158185500000002	16.214385	28.101986
8 h after dark	19.280559	18.732956	19.828162
12 h after dark	18.913233	18.913233	18.913233