(Text Page to) (29) Humidity and fog : January mean mixing ratio -- July mean mixing ratio -- Winter mean number of days with fog -- Spring mean number of days with fog -- Summer mean number of days with fog -- Fall mean number of days with fog. 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 1950
• Subjects: Climate; Weather; Data Visualization; Newfoundland
• Online Access: https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~323201~90092297; https://media.davidrumsey.com/MediaManager/srvr?mediafile=/Size4/RUMSEY~8~1/185/14001063.jpg

Descriptive text on verso of (29) Humidity and fog: Humidity data are obtained from the regular reading of artificially ventilated dry and wet bulb thermometers housed in standard thermometer shelters . The two mixing ratio maps on this plate are based on observations taken at midnight, 6 a.m., noon...