easier than the countrys began to stay divided in zones,howewer so yes a port weres usually a multiplier or by the same the port wicht meaning strongger wawes.
then so important for the zone could be the prestige of the university in the way than we could abstract
X =posibilitties of grow
A= number richest.
B = ponderation university
C = circuit area and then we could abstract:
X= A x B / C