wireless monitor doesn't show bytes in/out

how about Connection Type? This is the label used by some other programs.

or possibly

Connection Mode:

Connection type may refer as well to wired ethernet or DCC

We just did a small survey and here is what we found:

Buffalo
Network Type: Infrastructure
Network Type: Ad-hoc

Linksys
Infrastructure Mode
Ad-hoc Mode
or
Wireless Mode: Infrastructure
Wireless Mode: Ad-hoc

unknown brand
Operating Mode: Infrastructure
Operating Mode: Ad-hoc

Cisco
Infrastructure Mode
Ad-hoc Mode

US Robotics
Network Type: Infrastructure
Network Type: Ad-hoc

Symbol
Operating Mode: Infrastructure
Operating Mode: Ad-hoc

IEEE
Infrastructure Mode
Ad-hoc Mode