Description should include the following:
- A constant pressure chart (also called an isobaric chart) is a weather map representing conditions on a surface of equal atmospheric pressure.
- Constant pressure charts usually contain plotted data and analyses of the distribution of height of the surface (contours), wind (isotachs), temperature (isotherms), and sometimes humidity (isohumes).
Retrieved from https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_00-6B.pdf
PLT283