In the table below you can see the time savings on 180 km.
Due to our experience we were expecting the most narrow position to be the fastest and were surprised by the fact that it was the slowest. In any case we are going to repeat this test with a different stem and 2 cm raised aerobars to decrease the surface where the wind is broken by the bike.
As always these values only show a tendency by our testperson and can be totally different in your specific case. Therefore, sign up to our platform at data.aerotune.com and test these positions yourself with our aerotest. Be smart, stay aero!