Unit: dollars/ ton
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    LME Out Price   LME Spot Price/b/c in 3-month
Copper   5980.0/5981.0           3       b
Aluminium   1949.0/1950.0         -36       c
Lead   1810.0/1812.0         -22       c
Zinc  1809.0/1810.0         -27       c
Tin 13550.0/13560.0        450       b
Nickel 18800.0/18900.0        -15       c
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c for contango£¬b for backwardation