Striking number heading chart (7)

I believe the answer is:

notable

'striking' is the definition.
(I've seen this before)

'number heading chart' is the wordplay.
'number' becomes 'no' (abbreviation for 'number').
'heading' is a charade indicator (letters next to each other) (some letters go in front of or head others).
'chart' becomes 'table' (I've seen this before).
'no'+'table'='NOTABLE'

(Other definitions for notable that I've seen before include "Celebrated" , "Prominent" , "Worthy of remark" , "Significant or distinguished" , "Eminent" .)

I've seen this clue in The Guardian, The Times and The Telegraph.

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