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19. Daily maximum and minimum temperatures (°C. ) recorded in 1951 by thermograph 



at Lake Superior and Ishpeming Railroad ore dock, Marquette, Michigan 165 



20. Daily maximum and minimum temperatures ("C, ) recorded in 1952 by thermograph 



at Lake Superior and Ishpeming Railroad ore dock, Marquette, Michigan 166 



21. Daily maximum and minimum temperatures (°C. ) recorded in 1953 by thermograph 



at Lake Superior and Ishpeming Railroad ore dock, Marquette, Michigan 167 



22. Daily maximum and minimum temperatures ('C. ) recorded in 1954 by thermograph 



at Lake Superior and Ishpeming Railroad ore dock, Marquette, Michigan 168 



23. Daily maximum and minimum temperatures (°C. ) recorded in 1955 by thermograph 



at Marquette water plant 169 



24. Daily maximum and minimum temperatures ("C.) recorded in 1956 by thermograph 



at Marquette water plant 170 



25. Daily maximum and minimum temperatures ("C. ) recorded in 1957 by thermograph 



at Marquette water plant 171 



26. Daily maximum and minimum temperatures (*C. ) recorded in 1952 by thermograph 



at Stannard Rock lighthouse 172 



27. Daily maximum and minimum temperatures (°C.) recorded in 1953 by thermograph 



at Stannard Rock lighthouse 173 



28. Daily maximum and minimum temperatures (*C. ) recorded in 1953 by thermograph 



at Calumet and Hecla water plant 174 



29. Daily maximum and minimum temperatures ('C.) recorded in 1954 by thermograph 



at Calumet and Hecla water plant 175 



30. Daily maximum and minimum temperatures ('C. ) recorded in 1955 by thermograph 



at Calumet and Hecla water plant 176 



31. Daily maximum and minimum terfiperatures (*C. ) recorded in 1956 by thermograph 



at Calumet and Hecla water plant 177 



