Your screenshot doesn't really tell us anything. What do you want us to conclude from the above? You need to tell us what you think is wrong before we can help you.
the question is that how come you got all your CTR and ECPM in one post or channel I am not sure how yoru channel works but that looks unhealthy for me... maybe your using something automatic becarefull as to much high CTR is also counted as FRAUD clicks so becareful whatever you do stop it right their...
its 100% legalised i dont do anything special for this i get this automatically check there my earning is very low i dont know the reason
eCPM is Paid per 1000 impression... CTR is Click Thru Rate = click/page impressions x 100% Earning = impressions page x eCPM Maybe you have only 2 page impressions.. eCPM is directly proportional to page CTR