You can press Num+ (or F on compact) twice to get a cursor up there and see what each is by name and a little (possibly useless) description, but this is also used to 'click off' statuses and remove them, like Sneak before you recast it.
I think they're still working on unique icons for each effect on PC, which will be much more helpful than the general 'offense/defense up/down', but you'll learn a lot of them anyway.