condition	mean	min	max
4 h after light	21.993436	15.979913	28.006959
8 h after light	17.5370415	16.825312	18.248771
12 h after light	14.710023499999998	13.551362	15.868685
4 h after dark	12.9217135	12.61165	13.231777
8 h after dark	12.29015	11.288783	13.291517
12 h after dark	19.620131	19.620131	19.620131