230 



Meteorology of New Haven, 



to the series of S6 years. The corrected temperature at 5 or 6 o'clock 

 was obtained in a similar manner. We had now three points of the 

 diurnal curve of temperature determined from 86 years of observa- 

 tions ; one point being near the liour of minimum temperature, and a 

 second near the hour of maximum temperature ; and we had two in- 

 termediate points determined from nine years of oljservations. A 

 curve was then drawn through these five points as nearly as possible 

 parallel to the curve previously determined. Tiie following table 

 shows the resulting temperatui-e obtained for each hour of each month 

 of the year. 



Mean teniperaiure of the air at JSfew Haven for each hour of each 

 moMh of the year. 



Hour. 



Midnisrlit, 



Noon, 

 I 



2 



3 



4 

 5 



6 



7 



Monthly 

 mean=!, 



Ja.li. Feb. 1 March. April 



May. 



June. I July. 



24-26 25-24' 32-38 42-19 5i-886r-i566-46 

 23-91 24-77' 3i 77 4[-4ii5i-oi6oo3 65-49 

 23-53 24 3 1 3 [-24 '4o-74|5o- 1 2|58-9t '64-69 

 23-i9j23-8o 30-72 |4o-ro49'3i 58 2564-1 

 22-83 23-32 30-28 !39-52!48-78 58- 1063-97 



Au". 



Sept. 



Oct. Nov. 



65-57 57'7i 47"02 37-68 

 64-75|56-87 46-26 37-14 

 64-o3 56- 18J45-62 36-64 

 63-56 55-70 45o5 36-22 

 63-i6 55-27'44-59 35-82 



■22-19 



22l5 

 22-71 

 25-20 

 28-12 



3o-i6 



31-72 

 3 2 -60 

 32-87 

 32-4i 

 31-26 

 29-37 



27-92 

 26-84 

 -26 o4 

 25 42 

 24-98 



22-8i 3o-oo 

 23 ot 3[-i8 

 24-42, 33-79 



27-60 

 27-25 

 2693 

 26-64 



26-45 

 26-46 



44-80:56-77 66-99 7o-8o'6S-986o-78'48-8 1 37-34 27-21 



22-/i6 22-95| 2991 39-31 48-90^58-7964 2763-22 55-i5|44'29 35-52 



39-69 5o-686o-83 65 5 1 63-96 55-66'44-45 35-52 

 41-57 53-6563-79 67-9866-2i'57-75'45-83 35-" 



Dec. 



Year. 



28-2544-98 

 27-93 44-28 



27-60 36-55 147-96 59-42 6964 73-3o 

 30-59 39-33 |5o-7i|6[-497r69 75-45 

 32-34 40-95 52 33 63-0573-0477-23 



33-67 42-23 

 34-70 43- 



53-6264-26 

 54-5865-21 



35-o6 43-56 ;55-i6'65-79 

 34-87' 43-43 55- 19|65-8 

 33-89 42-69 '54 6765-30 

 31-92 4o-83 53-44 64-07 



3o-i2 

 28-73 

 27-67 

 2688 

 26-27 



24 58 25-73 

 26 53 28-11 



3863 

 36-97 

 35-52 

 3443 



50-89 

 483i 

 46-23 

 44-86 



33-69 ;43-87 

 33-o4 43 04 



3609 



46-84 



74-0878-37 

 74-8979-12 

 75-2879-47 

 75 21 79-37 

 74-5978-85 

 73-4477-79 



71-5463-75 5 [ -68 39-86I29-41 

 73-71 166-28 5462 42-56 32-o5 

 75-6o68-i5 56-75 '44-5i 33-91 



■76-8269-39 

 77-62170-17 

 78-0170-54 

 77-9470-39 

 77-3869-65 

 76-2i|68-3o 



58-0545-9535-4 

 58-85 46-69 36-27 



59-1846-89 

 58-8 1 ,46-5 1 

 57-70 44-95 

 55-5743-20 



52-00 7i-27|75 84 74-26,66-47 53-86 4r88 

 58-93|69- 1 2 73 69 72-24 64-38 52-2b!4o-82 

 56-66|66-88,7i-77 70-3 1 162-4250-88,39-95 

 55-o5 65- 14 7001 68-67 6o-8t 4964 3925 

 53-8i63-68 68-78'67-53 5965 48-68,38-73 

 52-83 62-36 67-55 6646 58-63 47"82:38-2o 



57-2866-9671-66 70 32|62-5o 5i-io 4o-32 



36-54 

 35-95 

 34-44 

 32-5i 53- 



43-63 

 43-10 

 42-71 

 42-62 



43-i5 

 44-62 

 46-95 

 49-66 



5222 

 5400 



55-3o 

 56- 1 5 

 5653 

 56-32 

 55-45 



3 1 -42 

 3o-63 

 2993 

 29-38 

 28-96 

 28-60 



30-42 



52-o5 

 50-24 

 48-69 

 47-46 

 46-55 

 45-74 



4901 



Subtracting each of these numbei-s from the mean for the month, 

 we obtain the following table showing the corrections to be applied 

 to the means of the hours of observation to obtain the true mean 

 temperatures at New Haven. These numbers indicate a diurnal 

 range of temperature a little greater than that shown by the table 

 on page 229. 



At the bottom of the table is given a comparison of some of the 

 different modes which have been proposed for deducing the mean 

 temperature from a limited number of observations. 



