4. In no case may the remuneration be less than the minimum applicable to the municipality under sections 12 to 16 or greater than the maximum applicable to it under section 21.
Notwithstanding the foregoing, the remuneration fixed by the council of a municipality having less than 500 inhabitants may be less than the minimum applicable to it but shall be equal to or greater than $1,470 annually for the mayor and $490 annually for a councillor.