condition	mean	min	max
0 h after light	20.6101	19.9442	21.276
4 h after light	17.63015	17.1483	18.112
8 h after light	15.636800000000001	15.3107	15.9629
4 h after dark	17.924599999999998	17.0819	18.7673
8 h after dark	21.88175	21.6006	22.1629
12 h after dark	20.93175	20.8651	20.9984