condition	mean	min	max
4 h after light	8.201796666666667	8.03369	8.50812
8 h after light	8.21232	8.10507	8.37908
12 h after light	7.65306	7.59864	7.72262
4 h after dark	8.067459999999999	7.95754	8.238539999999999
8 h after dark	8.025500000000001	7.8552800000000005	8.29169
12 h after dark	7.91411	7.720289999999999	8.11381