condition	mean	min	max
4 h after light	8.43408	7.60327	9.26489
8 h after light	7.572765	7.18053	7.965
12 h after light	7.85319	7.61444	8.09194
4 h after dark	11.962566666666666	10.0764	14.3891
8 h after dark	10.20952	7.31356	12.1563
12 h after dark	10.73148	9.53014	11.3889