The Challenge of Arctic Sledging

A 19th century map showing the route followed by Lockwood and his colleagues as they attempted to set a new farthest north record. Below the map are a series of sledge rations (meat, butter, vegetables, sugar, milk, tea, chocolate and bread). Clicking on each sledge ration reveals a drop down menu containing different quantities of that item.

• Meat
  
  Select... 1.34 oz 2.21 oz 2.83 oz 3.16 oz
• Butter
  
  Select... 10.88 oz 13.38 oz 15.65 oz 17.12 oz
• Vegetables
  
  Select... 0.75 oz 1.27 oz 1.85 oz 2.12 oz
• Sugar
  
  Select... 1.15 oz 1.86 oz 2.60 oz 3.05 oz
• Milk
  
  Select... 1.99 oz 2.55 oz 3.22 oz 3.88 oz
• Tea
  
  Select... 0.19 oz 0.66 oz 1.14 oz 1.48 oz
• Chocolate
  
  Select... 4.90 oz 6.85 oz 8.53 oz 10.11 oz
• Bread
  
  Select... 5.56 oz 6.33 oz 7.10 oz 8.25 oz