LME 3-month Futures    LME Spot/3-month B/C
Copper  3720/3740           c   35 / 30     c 
Tin 12400/12550          b    28 /250    b
Lead  1105/1115            c 15   / 10   c
Zinc  1225/1235        b     4/9    b
Aluminium  1780/1790        c   50/46   c   
Nickel 10220/10420       c    125/105   c

c for contango£¬b for backwardation