inv_per_1000_pop (type: esriFieldTypeDouble, alias: Investment in rail infrastructure per 1000 population (Euros), SQL Type: sqlTypeOther, nullable: true, editable: true)
rid_per_1000_pop (type: esriFieldTypeDouble, alias: Ridership in millions of passenger-kilometers per 1000 population, SQL Type: sqlTypeOther, nullable: true, editable: true)