Title: Interpret constant pressure chart and isotachs chart.
Course: Aircraft Pilot Training II (20053-II) > Section: Examining Atmospheric and Meteorological Conditions

Interpretation should include the following:

- Isotachs chart is an alternate term for isobaric chart and is a weather map representing conditions on a surface of equal atmospheric pressure.
- The height above sea level at which the pressure is a particular value may vary from one location to another at any given time, and also varies with time at any one location, so it does not represent a surface of constant altitude/height.

PLT042