   0.97
#&gt; COCA 17  0.0679  1.0441  0.0664  1.9125    0.59
#&gt; COCA 18  0.0641  0.9777  0.0589  1.6970    0.98
#&gt; COCA 19  0.0562  0.9188  0.0489  1.4084    1.00
#&gt; COCA 20  0.0445  0.8699  0.0371  1.0686    1.00
#&gt; COCA 21  0.0468  0.8328  0.0373  1.0732    1.00
#&gt; COCA 22  0.0464  0.7955  0.0353  1.0162    1.00
#&gt; COCA 23  0.0559  0.7603  0.0403  1.1595    1.00
#&gt; COCA 24  0.0703  0.7200  0.0473  1.3629    0.99
#&gt; COCA 25  0.0456  0.6727  0.0293  0.8450    1.00
#&gt; COCA 26  0.0