condition	mean	min	max
0 h after light	18.13205	17.6515	18.6126
4 h after light	12.8677	12.6732	13.0622
8 h after light	10.175475	9.89385	10.4571
4 h after dark	15.477049999999998	14.8347	16.1194
8 h after dark	15.6646	15.2243	16.1049
12 h after dark	14.3588	13.9634	14.7542