Unit: dollars/ ton
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    LME Out Price   LME Spot Price/b/c in 3-month
Copper  6869.0/6870.0          -28     c
Aluminium 2024.0/2024.5          -34     c
Lead  2332.0/2333.0          -25     c
Zinc  2235.0/2236.0          -31     c
Tin 14950.0/14975.0          20     b
Nickel 16745.0/16750.0         -60     c
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c for contango£¬b for backwardation