A Question about google Adsense? Please look..

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hi there i made a post earlier because my adsense said no data, well its back on now but i have another question.. I have two websites attached to my adsense account, one adsense was automatically added by the site and adsense but the other i had to put the codes into the website myself, even though there are adsense ads on the website i'm not sure its working as my page impressions for today are 1 which surely cannot be right for two sites.. Any advice how i can check if the other site is working?