Google Ad Unit above the fold perform better than other Ad units. Hence, for better earnings it is highly advisable to place atleast one unit above the fold on your site.
NON-STANDARD AD UNITS
2
Avoid using Standard defined ad units. Instead, use custom size as per your site's requirement
USE ALL AVAILABLE OPTIONS
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Google Adsense allow multiple options like Page Level Ads, Matched Content etc. Give a try to all these options once to find the best match for your site
ENABLE AUTO ADS
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Enable Google Auto Ad and it will take care of everything. All you need to do is simply add a few line of codes to your site to enable this
USE HEAT MAP
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Heat Map is colorful graphical representation of the data to find where users have click on your website. Use this data to find the best placement for your ad units
For detailed article, kindly visit the blogpost at LoveUMarketing