Need help importing specific data (variable values) from a text file and ignoring non useful text and metadata : <p><a href="http://i.stack.imgur.com/xOgp4.jpg" rel="nofollow">here is my attempted code though it may be rubbish and to the right is the data, i just want the two columns of data from line 15 onwards</a></p>

<p>my code reads: </p>

<pre><code>import numpy as np 
import matplotlib as mplt 

data = np.genfromtxt('practice_data.txt', 
                     dtype='float', 
                     delimiter='  ') 
time = data[:,0]
channel=data[:,1]  
</code></pre>

<p>if anyone can help me to extract the two columns as two variables that would be amazing</p>
