(Text Page to) (19) Atmospheric pressure : January mean sea-level pressure in millibars -- April mean sea-level pressure in millibars -- July mean sea-level pressure in millibars -- October mean sea-level pressure in millibars. Compiled from information supplied by the Meteorological Division, Department of Transport. (Canada Department of Mines and Technical Surveys.)

• Main Authors: Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul
• Format: Text
• Language: unknown
• Published: Department of Mines and Technical Surveys, Geographical Branch 1953
• Subjects: Canada; Nicholson; Newfoundland
• Online Access: https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~323181~90092276; https://media.davidrumsey.com/MediaManager/srvr?mediafile=/Size4/RUMSEY~8~1/185/14001043.jpg

Descriptive text on verso of (19) Atmospheric pressure: These maps were prepared from atmospheric pressure readings taken daily at 00, 06, 12 and 18 hours G.M.T. during the period 1940-1949 inclusive, except for the area north of 72 1/2˚N., where the period was 1948-1953 inclusive, and for which the...