 ... years is taken as the first mean, for January 2, as the second, and so on. The mean of successive 5 days has been projected in Fig. 11. The mean for the year is 48.6°, and this comes on April 23 and October 24, that is, during 181 days the temperature...  The Climate of Chicago - Page 36by Henry Allen Hazen - 1893 - 137 pagesFull view - About this book
 | Sir Norman Lockyer - Electronic journals - 1894 - 944 pages
...The highest temperature occurs about the middle of July, and the lowest the third week in January; for 174 days the temperature is rising, and during 191 it is falling. Tne cold spell about the middle of May, which is generally observed in the northern hemisphere, is... | |
 | United States. Weather Bureau - 1892 - 762 pages
...October 24, that is, during 181 days the temperature is below the mean, and for 184 it is above. The highest temperature occurs on July 14, and the lowest...hemisphere toward the end of the second week, and has jeceived the term " ice saint's days," " May cold spell," etc. The lowest point of the " cold spell... | |
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