Unit: dollars/ ton
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LME Out Price   LME Spot Price/b/c in 3-month
Copper  4800.0/4805.0          10     b
Aluminium  1485.0/1486.0         -36     c
Lead  1550.0/1555.0          11     b
Zinc  1556.0/1557.0         -30     c
Tin 12200.0/12250.0        100     b
Nickel 12800.0/12825.0        -60     c
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c for contango£¬b for backwardation