condition	mean	min	max
4 h after light	17.6255	17.5645	17.6865
8 h after light	11.12345	8.6485	13.5984
12 h after light	18.43225	18.1071	18.7574
4 h after dark	20.7512	16.8689	23.4726
8 h after dark	15.9683	14.8939	17.8479
12 h after dark	21.078266666666668	19.5669	22.5645