Wireless Network Name (SSID): Wireless Network Name (SSID) is the name assigned to a wireless network. This is the same as the SSID or ESSID configuration parameter. Note that, as a security measure, some wireless access points do not broadcast their SSID. In such cases, the SSID field will be blank even though the rest of the information will still be displayed.  
Channel: The channel determines which operating frequency will be used. 
Security: Identifies if the wireless network requires WEP security settings.
Signal: Identifies the signal strength of the communications.
MAC Address: Identifies the hardware address (MAC Address) of the  wireless device broadcasting this information.
Mode: Identifies the type of wireless network -- Access Point (Infrastructure) or Computer-to-computer (Ad Hoc).