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Text File  |  1999-10-23  |  203b  |  13 lines
  1. The type of weather just below the ionosphere 
  2.  
  3. The amount of radiation received from the sun, mainly ultraviolet
  4.  
  5. The speed of the winds in the upper atmosphere
  6.  
  7. The temperature of the ionosphere
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  11. 3
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