title: Read specific column from .dat-file in Python
body: <p>I have a results.dat file with some data like this:</p>
  
  <pre><code>7522126 0   0   0   0   0   0   -419.795    -186.24 1852.86 0.134695    -0.995462   -2.53153
  7825452 0   0   0   0   0   0   -419.795    -186.24 1852.86 0.134695    -0.995462   -2.53153
  8073799 0   0   0   0   0   0   -345.551    -140.711    1819.04 -0.0220266  -0.85992    -2.29598
  </code></pre>
  
  <p>The values are each separated by a tab.</p>
  
  <p>I want to extract the value in e.g the 8th column for every single line, and save it to an array. So the output should be this:</p>
  
  <pre><code>-419.795
  -419.795
  -345.551
  </code></pre>
  
  <p>What's the easiest way to accomplish this?</p>