Reduction of Meteorological Tables in the Doab. 429 



The Mean of the columns of Annual Maxima and Minima is 

 70.37°, exhibiting a difference of — 0.39° from the Mean Annual 

 Temperature. 



TABLE V. 



Shewing Thermometric Results for the year 1841. 



No. 



Months. 



Min. 



Mean. 



Max. 



E 



Monthly 

 Differen- j 

 tial. S|' 



pochs 



0| 



1 



2 

 3 

 4 



5 

 6 



7 



8 

 9 

 10 

 11 

 12 



January, . . 



February, . . 



March, . . 



April, 



May, 



June, 



July, 



August, . . 

 September, 

 October, . . 

 November, 

 December, 



o 



47- 

 52. 

 62. 

 68. 

 79. 

 83, 

 83. 

 82. 

 72. 

 71. 

 51. 

 42. 



5U3 

 59.29 

 67.22 

 75.03 

 82.53 

 87.73 

 88.61 

 88.90 

 7783 

 72.32 

 60.26 

 49.35 



0 



56. 

 68. 

 72. 

 85. 

 86. 

 92. 

 94. 

 92. 

 85. 

 75. 

 69. 

 58. 



-—20.27 30th 

 —12.41 1st 

 — 4.48 2d 

 -f 3.33 6th 

 + 10.83 10th 

 + 16.03 30th 

 + 16.91 1st 

 + 17.20 |26th 

 + 6.13 !l6th 

 + 0.62 :12th 

 —11.44 29th 

 —22.35 25th 



2d 

 6th 

 16th 

 12th 

 1st 

 9th 

 22d 

 17th 

 0 

 3d 

 14th 

 30th 



6th 

 27th 

 27th 

 27th 

 31st 

 2d 

 14th 

 15th 

 8th 

 6th 

 1st 

 1st 





Sums. 



792. 860.5 



932. 



0 0 



0 



0 





Means. 



66.00 ' 71.70 



77.76 



0 0 



0 



0 



The Maximum Temperature of 1841 is 4° higher than that of 

 1840, while the Minima of both are the same. Altogether the 

 year 1841 appears to have been hotter by nearly 2° than the year 

 1840. The extreme Annual range is 52°, or 4° higher than during 

 the preceding year, and the Mean range is 39.55°, or 0.98° during the 

 same time. The Mean of the columns of Maxima and Minima is 

 71.88°, shewing a difference of +0.18° from the Annual Mean. 



The following Table exhibits at one view the Monthly Differentials 

 at Surrowli for five years : — 



