    11   rnorm   average         100              0            1
#&gt; 12:     12   rnorm   average         100              0            1
#&gt; 13:     13   rnorm   average         100              0            2
#&gt; 14:     14   rnorm   average         100              0            2
#&gt; 15:     15   rnorm   average         100              0            3
#&gt; 16:     16   rnorm   average         100              0            3
#&gt; 17:     17   rnorm   average         100              0           