Playing with AdSense ads position

When you place AdSense on your site you have to do this simple consideration: where can I place AdSense advertisements in order to realize a great result in terms of revenue without irritating my readers placing advertisements in too much strategic positions?

First time, in order to maximize my revenue, I placed an AdSense box (336 x 280) below the title of my post... Sincerely, I didn't find it a great choice in terms of readability and layout but, considering the all respect daily income, without doubt the best. But my readers didn't appreciate my "revenue-oriented" choice so, after several messages, in order to satisfy my aficionados readers, I decided to move AdSense box (336 x 280) to the end of my posts. Result...? This is the trend of my revenue in the latest days after I moved AdSense box below the text of posts:


How you can see from the picture (considering a constant traffic about 3500-4000 unique visitors/day), a disaster. I didn't report my daily income but isn't important to understand the poor trend.
Then Saturday morning I decided again to place AdSense below the title of my post, but changing AdSense box (336 x 280) with a smaller one which I find more tolerable for all my readers... Whit my big pleasure, today, just two days after I found a significant improvement on my revenue comparable with my initial daily income using 336 x 280 ads box. I hope this choice can be more "appreciated" for all my readers :)) !

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