Now, what that means is that extracted sample that we extracted after salting out is 3.5 times as pure as our original sample. And so what that means is our procedure did in fact work because it purified our sample. And that is precisely what is shown when we go from this band distribution to this band distribution going here to here, we decrease the number of bands and that means we remove those unwanted proteins from our mixture. Now let's oh, and by the way, what is our yield? Well, the yield should decrease because every time we carry out a procedure we lose a certain amount of protein from our mixture. And so what is our yield?