File1:

Item,Time,Pattern ,Attributes,From
an_en11,200.00,{0 133},{ }
br_gh13,140.09,{0 59},{ }
ce_oy74,300.05,{0 230},{int_43}
dt_pp50,200.11,{0 122},{ }
er_tk02,305.47,{0 220},{ }
ef_yb41,200.05,{0 233},{ }

File2:

Item,Sink,Buffer,Cell,Slew,Path,Violation,Area 
dt_pp50,0,0,2,0.000,0.000,0,0.000
er_tk02,0,2,3,0.002,0.004,0,0.001
ef_yb41,0,1,5,0.000,0.000,0,0.000


Output :

Item,Sink,Buffer,Cell,Slew,Path,Violation,Area,Time
dt_pp50,0,0,2,0.000,0.000,0,0.000,200.11
er_tk02,0,2,3,0.002,0.004,0, 0.001,305.47
ef_yb41,0,1,5,0.000,0.000,0,0.000,200.05