Where is the best place to put Google Ads on your blog?

Tweet

I am about to add Google AdSense to my blog. I am struggling now to find the best place. I put them on the left then move them to the right. I am having a hard time to chose. If you could tell me which place you think is better it will help me in my decision. I have received a lot of help with my questions and I am grateful to everyone for that. What place do you think is better for Google AdSense or any other ads? Thank you for your help and your time.