title: Only read selected columns
body: <p>Can anyone please tell me how to read only the first 6 months (7 columns) for each year of the data below, for example by using <code>read.table()</code>?</p>
  
  <pre><code>Year   Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec   
  2009   -41  -27  -25  -31  -31  -39  -25  -15  -30  -27  -21  -25
  2010   -41  -27  -25  -31  -31  -39  -25  -15  -30  -27  -21  -25 
  2011   -21  -27   -2   -6  -10  -32  -13  -12  -27  -30  -38  -29
  </code></pre>