condition	mean	min	max
4 h after light	13.4215	12.7571	14.0859
8 h after light	8.45811	7.94019	8.97603
12 h after light	12.742630000000002	8.85166	16.6336
4 h after dark	9.977285	9.06497	10.8896
8 h after dark	19.77935	18.8103	20.7484
12 h after dark	17.010199999999998	15.5929	18.4275