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["Machine","Products","Qty.","downtime",null,null,null,null,"Values"]
["No1","a",1,10,null,null,"Machine","Products","Sum of Qty.","Sum of downtime"]
["No1","b",2,20,null,null,"No1","a",5,50]
["No1","c",3,30,null,null,null,"b",7,70]
["No1","a",4,40,null,null,null,"c",3,30]
["No1","b",5,50,null,null,"No2","a",9,40]
["No2","h",6,10,null,null,null,"b",9,40]
["No2","g",7,20,null,null,null,"g",7,20]
["No2","a",8,30,null,null,null,"h",6,10]
["No2","b",9,40,null,null,"No3","a",3,30]
["No2","a",1,10,null,null,null,"m",1,10]
["No3","m",1,10,null,null,null,"n",6,60]
["No3","n",2,20,null,null,"Grand Total",null,56,360]
["No3","a",3,30]
["No3","n",4,40]

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