condition	mean	min	max
0 h after light	9.91975	9.5342	10.3053
4 h after light	15.313400000000001	12.9871	17.6397
8 h after light	18.32575	17.6241	19.0274
4 h after dark	19.633650000000003	17.1259	22.1414
8 h after dark	20.34695	20.1842	20.5097
12 h after dark	13.5628	13.1546	13.971