condition	mean	min	max
4 h after light	17.31315	13.6182	21.0081
8 h after light	9.740155	9.31561	10.1647
12 h after light	5.03646	4.7397	5.33322
4 h after dark	6.81332	5.38854	7.85302
8 h after dark	10.594966666666666	10.2476	11.1866
12 h after dark	17.814866666666667	17.0954	19.2308