I think wlahu a3lam u just got a small click bomb which google have taken as invalid clicks and you didn't get paid for them. Also, are these the stats of the whole day or just happened in the middle of the day??
I believe this is caused by invalid clicks. it's better if you block the IP which has the same address as yours, and do not forget to create the web allowed list for your adsense code. you can setup those in your Adsense account. Hope that's works.