There would be no reason to assume that these authorities will have the highest incomes because of varying proportions of unemployed and retired people and others not working.Aberdeen City£423.2Edinburgh City£396.1South Ayrshire£387.0Glasgow City£373.1Renfrewshire£373.1Source: Office for National Statistics New Earnings Survey data.Note: Figures represent average gross weekly earnings in April 1999, before deductions for tax and National Insurance contributions, for full time employees...