Table:
text: List of municipalities in Quebec
List of municipalities in Quebec
Region 9
Code Type_ Name_ Area_km_2_ Population Regional_County_Municipality Region
98025 CT Natashquan 193.20 374 Minganie 09
98030 M Aguanish 594.40 312 Minganie 09
98035 M Baie-Johan-Beetz 425.31 85 Minganie 09
98040 M Havre-Saint-Pierre 3779.89 3240 Minganie 09
98045 M Longue-Pointe-de-Mingan 417.60 501 Minganie 09
98050 M Rivière-Saint-Jean 652.54 284 Minganie 09
98055 M Rivière-au-Tonnerre 1331.17 365 Minganie 09

Question: Among the list of Quebec Region 9 municipalities, what is the average area for code 98030 with a population over 312?