condition	mean	min	max
0 h after light	21.82535	18.2578	25.3929
4 h after light	18.2456	12.9545	23.5367
8 h after light	19.47215	18.4505	20.4938
4 h after dark	18.780250000000002	13.1125	24.448
8 h after dark	23.76735	23.1676	24.3671
12 h after dark	27.095	25.2186	28.9714