Update local injury models

[AnnaKS123]

Local injury model creates too high standard errors and so does not fit the data well.

[AnnaKS123]

Poisson regression model was updated to fit the data better (i.e. with lower standard errors). Only issue is with Puerto Montt which might need a different approach by e.g. creating one model including the three closest Chilean cities Temuco, Valdivia and Osorno.

[AnnaKS123]

Issues fixed for small Chilean cities. Only issue now with Bangalore and Delhi who currently have high standard errors