Hands in the drops are about 4"-6" lower than a true aero position (if your drops are in a racing profile ie: 3" +/- lower than the saddle) and about 4"-6" closer than aero. A close approximation would be to sit on the bike and put your elbows on top of the bars on either side of the stem. You'll probably find that you need to shift your hips forward, which might force you to move your saddle forward as well.