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Fig. 7 Three-dimensional perspectives of the energy 
consumption patterns represented by the IUA domes of 
four cities in eastern United States. 
  
  
  
o 
10000000 |- 
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5,000 10000 20,000 50,000 100000 200000 
  
Volume (x) in mm3 
Fig. 8 Regression line for 1975 energy consumption in 
kwh as a function of IUA dome volume for 17 urban areas, 
recorded on a DMSP image of eastern United States.