As it is, half of stations used quotas (6,3)

I believe the answer is:

status quo

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'as it is' is the definition.
(things as they are)

I don't understand the rest of the clue.

(Other definitions for status quo that I've seen before include "Existing state of affairs; rock group" , "The existing state of affairs, as things are" , "The existing state of affairs - in Latin" , "band" , "The situation as is, existing state of affairs" .)

I've seen this clue in The Guardian.

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