> You may name the Lisp block like that:

   > --------------------------------------

   > #+TBLNAME: raw-data
   > | 1 | a | 3 |
   > | 2 | b | 4 |
   > | 3 | c | 6 |
   > | 4 | d | 7 |


Thank you!

BTW I found it strange that the extracting function does not exist in
vanilla org.


My situation is a bit different, since I later want to use R.

So I have


#+TBLNAME: raw-data
| 1 | a | 3 |
| 2 | b | 4 |
| 3 | c | 6 |
| 4 | d | 7 |

#+NAME: NotasA
#+BEGIN_SRC elisp :var data=raw-data
(mapcar (lambda (line)
            (list (nth 2 line)))
         data)
#+END_SRC

#+RESULTS: NotasA
| 3 |
| 4 |
| 6 |
| 7 |



#+begin_src R  :var notasA=notasA
summary(notasA)
#+end_src

And the last call does not work. It seems that R needs a table name.....

Uwe