Related Clues:

• Feature of meteorological chart in middle of this other map
• Map line of constant temperature
• Pressure line like this found in one pub
• War zone that is right away from country's boundary
• Boris upset about article describing Met line
• Line of constant pressure
• Line on map in black -- I fly around it
• Meteorological contour
• Is nothing except for line on map
• Line on weather map as a result of which key is to check air for pollution
• Facade of indifference for a feature of the weather?
• It shows pressure is nothing to the legal profession
• Line on map is not the same motorway
• Phony persona
• Evidence of pressure may be seen as such in island pub