====== 9.2.2. Tag each row header and column header cell with ====== In each data table, tag each row and column header cell with the '''' tag. In other words each cell that is used to understand the data shown in a table, must be tagged with ''''.




    Average monthly temperatures of the 3 largest United States cities in 2012.
    
         
        New York
        Boston
        Washington
    
    
        June
        22°C
        28°C
        26°C
    
    
        July
        24°C
        30°C
        28°C

Average monthly temperatures of the 3 largest United States cities in 2012.
	New York	Boston	Washington
June	22°C	28°C	26°C
July	24°C	30°C	28°C

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