Question about a Min Nan word 空

Does anyone here have knowledge about Min Chinese, Min Nan?

I know that 空 is mostly pronounced khang, but when it means zero, it is pronounced khong in Min Nan.

Is it ever pronounced "khang" in Min Nan when it means zero?

Please look at
[en.wiktionary.org]

...and then:

Pronunciation 2

and the last item:
8. (Min Nan) zero

A bit earlier at this page, under "Pronunciation 2", it says:

Min Nan
(Hokkien, POJ): khòng / khàng
(Teochew, Peng'im): kong1 / kang3

Kang? So I don't know if zero can be pronounced as "khang" as well as "khong".

Thank you.