Unit: dollars/ ton 
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LME Out Price   LME Spot Price/b/c in 3-month
Copper         7065.0/7070.0             -30         c
Lead       2349.5/2350.0             -33         c
Zinc      2495.0/2500.0             -48         c
Aluminium        2255.0/2257.0             -47         c
Nickel       18650.0/18655.0            -110        c
Tin        16200.0/16250.0             40         b
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c for contango£¬b for backwardation