Check Raise Stats

whats the differece between

Flop Check-Raise OOP & Flop Check-Raise CB OOP

http://hm2faq.holdemmanager.com/ques...ions#flop_menu
On page above it says
Flop Check-Raise CB OOP is Pct of hands player check-raises OOP when facing a CB on the flop

but doesn't mention Flop Check-Raise OOP

Its the same on each street

Turn Check-Raise OOP & Turn Check-Raise CB OOP

River Check-Raise OOP & River Check-Raise CB OOP