condition	mean	min	max
4 h after light	9.330305	8.37991	10.2807
8 h after light	8.71318	8.02822	9.39814
12 h after light	9.027080000000002	8.67589	9.37827
4 h after dark	10.09848	9.27166	10.9253
8 h after dark	10.01365	10.0115	10.0158
12 h after dark	10.424949999999999	10.1561	10.6938