org-table-relative-ref-may-cross-hline

org-table-relative-ref-may-cross-hline is a variable defined in `org-table.el'.
Its value is

t

Documentation:
Non-nil means relative formula references may cross hlines.
Here are the allowed values:

nil Relative references may not cross hlines. They will reference the
field next to the hline instead. Coming from below, the reference
will be to the field below the hline. Coming from above, it will be
to the field above.
t Relative references may cross hlines.
error An attempt to cross a hline will throw an error.

It is probably good to never set this variable to nil, for the sake of
portability of tables.

You can customize this variable.