Figures to an extent raised (4)
I believe the answer is:
data
'figures' is the definition.
(I've seen this in another clue)
'an extent raised' is the wordplay.
'an' becomes 'a'.
'extent' becomes 'tad' (I can't explain this - if you can you should believe this answer much more).
'raised' says the letters should be written in reverse (going up in a down clue).
'a'+'tad'='atad'
'atad' in reverse letter order is 'DATA'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for data that I've seen before include "What's stored by computers" , "Numerical information" , "Computer info" , "Facts and figures as processed by computer" , "Collection of bits of information" .)