condition	mean	min	max
4 h after light	19.777646500000003	16.306609	23.248684
8 h after light	15.4389685	14.082116	16.795821
12 h after light	20.047355	16.795821	23.298889
4 h after dark	15.618930500000001	12.317081	18.92078
8 h after dark	17.271342	15.627842	18.914842
12 h after dark	12.98454	12.98454	12.98454