 According to his study in York 10% of the city’s population lived in primary poverty.Rowntree describes this group as consistently having "insufficient financial resources to obtain the minimum necessities for the maintenance of mere physical existence".The poverty line shows points where an individual might find themselves above or below the 'poverty line'- an idea Seebohm Rowntree developed from Charles Booth, the poverty line Rowntree drew has the age of the individual along the bottom, showing main events in the persons life that would affect whether or not they were above or below the poverty line.