condition	mean	min	max
4 h after light	18.0687585	17.500462	18.637055
8 h after light	17.0078945	16.925911	17.089878
12 h after light	16.3086325	15.116803	17.500462
4 h after dark	20.008826	15.841595	24.176057
8 h after dark	21.2575175	17.500462	25.014573
12 h after dark	16.506968	16.506968	16.506968