condition	mean	min	max
0 h after light	18.54835	18.5318	18.5649
4 h after light	19.884149999999998	16.2412	23.5271
8 h after light	9.36414	6.28808	12.4402
4 h after dark	20.47475	10.1114	30.8381
8 h after dark	16.29195	16.2236	16.3603
12 h after dark	10.124835000000001	6.16897	14.0807