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estimated ceiling—A ceiling classification applied when the ceiling height has been estimated by the observer or has been determined by some other method; but, because of the specified limits of time, distance, or precipitation conditions, ...
aircraft ceiling, balloon ceiling, estimated ceiling, indefinite ceiling, measured ceiling, precipitation ceiling.
Equinox: Spring: Occures on or about March 21st.
Estimated Ceiling: Report given by a pilot. Use of a ceiling balloon.
Evangelista Torricelli:Born in Italy 1608. Died 1647. Physicist/Mathematician: Invented the "Barometer" 1643.
aviation weather observation, a description or explanation of the manner in which the height of the ceiling is determined. The different types of ceilings according to this classification are aircraft ceiling, balloon ceiling, estimated ceiling, ...
 See also: Ceiling, Weather, Meteor, Surface, Report
  
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