I see many probes and only one station..

Ok. sorry the question might be stupid, but could somebody explain this to me...

I put my card into monitoring mode, run kismet and then airodump on the channel I am interested in...But here is the thing I don't get - I see my station and there is BSSID of my router, but in the same row (under the probes colum) I see my ESSID + 6 other ones (all in the same row)...What does it mean ????

I totally don't get it...Does it mean that there are another 6 networks on the same channel ???

This is how it looks like:

BSSID Station Probes

xx:xx:xx:xx:xx: xx:xx:xx:xx:xx:xx belkin, Polyman, Rumba...

Which mac should I used in deauthentication attack ???

Many thanks.