Default [Q] Random number showing up in Data Usage

There are some random numbers (about 10+) showing up in my Data Usage settings. I'm a user of the N7, and the numbers are only showing on my Data Usage and not the owner's. What is these numbers? It do not looks like a app to me. And for some of it, data is mostly used in foreground and not background. Do anybody know them?

Antivirus did not find virus on the device
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