condition	mean	min	max
4 h after light	6.144455	3.92919	8.35972
8 h after light	6.90674	6.68396	7.12952
12 h after light	12.37655	12.1274	12.6257
4 h after dark	21.6294	18.1436	25.1152
8 h after dark	9.118155	7.93871	10.2976
12 h after dark	12.696100000000001	10.7485	14.6437