condition	mean	min	max
0 h after light	18.48655	17.673	19.3001
4 h after light	17.1008	16.152	18.0496
8 h after light	16.62135	16.5547	16.688
4 h after dark	18.990299999999998	18.236	19.7446
8 h after dark	17.63695	17.4196	17.8543
12 h after dark	17.9754	17.8319	18.1189