Mxsmanic wrote in
:

writes:

But not every +X floor adjoins a designated X ceiling below. For
instance, consider the +05, +08, +11, and +12 Class B segments around
EWR on the NY TAC (see skyvector.com). What's the point of the + for
those segment floors? A +11 lets you fly at 1100', as opposed to
1099' without the +. But letting you fly one foot higher is of no
value, since that's much less than the accuracy with which you can
control or even measure your altitude. So why do they bother having
the + there?

I'm not sure,

I know.

Bertie