condition	mean	min	max
4 h after light	7.554	7.5049399999999995	7.63213
8 h after light	7.672796666666667	7.57707	7.74945
12 h after light	7.68083	7.421930000000001	7.83983
4 h after dark	7.6279	7.52855	7.80527
8 h after dark	7.58502	7.37915	7.80012
12 h after dark	7.479746666666667	7.30975	7.586060000000001