condition	mean	min	max
0 h after light	18.9792	17.5606	20.3978
4 h after light	8.58791	7.54166	9.63416
8 h after light	12.694500000000001	12.0873	13.3017
4 h after dark	16.88465	16.59	17.1793
8 h after dark	14.8667	14.6664	15.067
12 h after dark	11.828289999999999	9.65198	14.0046