condition	mean	min	max
4 h after light	21.716	19.9976	23.4344
8 h after light	8.08071	7.68381	8.47761
12 h after light	6.531235000000001	6.0751	6.98737
4 h after dark	8.394955	7.74015	9.04976
8 h after dark	10.463355	9.63611	11.2906
12 h after dark	15.9133	15.3348	16.4918