* Lumber Volume and Circumference;



circumvol=

{{4.7, 114}, {2.7, 96}, {3.5, 100}, {2.5, 110}, {4., 112}, {3.6, 108}, {2.7, 

    100}, {5.5, 132}, {5., 118}, {2.6, 100}, {2.5, 94}, {6., 144}, {3.8, 

    110}, {5.8, 134}, {3.9, 106}, {2.8, 102}, {5.8, 138}, {3.5, 102}, {3.6, 

    102}, {2.5, 100}, {3.5, 106}, {4.7, 118}, {3.6, 106}, {2.5, 98}, {5.8, 

    132}}