condition	mean	min	max
4 h after light	6.625305	5.97532	7.27529
8 h after light	4.97986	3.90623	6.05349
12 h after light	10.31419	8.21358	12.4148
4 h after dark	12.9807	10.3455	15.1875
8 h after dark	14.9498	13.1674	15.9174
12 h after dark	10.44407	9.11191	12.0017