Pressure of the Wind. 



291 



TABLE XXVIII. — Maximum Pressures of Wind, with the Maxima of the Daily Means, Tables 

 XXIV. and XXV., and corresponding Directions of the Wind for each Month in 1843. 



Month. 



Maximum Pressure. 



Max. of Daily Means of Max. 

 Pressures. 



Max. of Daily Means of Mean 

 Pressures. 





d. 



h. h. 



lb. 



Ft. 



d. 



lb. 



Ft. 



d. 



lb. 



Ft. 



January 



30 



6— 8 



9-8 



NW. 



30 



6-60 



w. 



30 



5-00 



w. 



February 



3 



20—22 



12-8 



Nby W. 



4 



5-97 



Nby W. 



4 



4-54 



N by W. 



March 



13 



0— 2 



50 



WNW. 



31 



1-80 



SW by S. 



31 



1-93 



SW by S. 



April 



12 



4— 6 



5-5 



WNW. 



14 



2-41 



Wby S. 



25 



1-92 



SW. 



May 



5 



0— 2 



4-8 



S. 



5 



2-47 



ssw. 



5 



1-51 



ssw. 



June 



7 



20—22 



3-6 



Sby W. 



8 



2-57 



ssw. 



8 



1-71 



ssw. 



July 



22 



10—24 



6-1 



NNE. 



3 



3-20 



sw. 



3 



2-31 



sw. 



August 



5 



8—10 



32 



wsw. 



5 



1-35 



sw by W. 



5 



0-56 



sw by W. 



September 



3 



0—18 



3-6 



Wby S. 



18 



102 



SW. 



28 



0-52 



NNW. 



October 



11 



10—18 



7-5 



Nby E. 



12 



3-42 



NNW. 



12 



2-02 



NNW. 



November 



21 



1 



22—24 



7-2 



NW. 



22 



3-32 



W. 



29 



1-75 



WNW. 



December 



4 



10—18 



7-6 



sw. 



5 



3-96 



SW. 



5 



2-79 



SW. 



The greatest pressure of the wind in the year 1843 occurred February 4"* 20*^ — 22'', being 12-8 lb., the 

 wind blowing from N. by W. 



The greatest mean daily pressui'e occurred January ZO^, the wind blowing from W. ; being, for the maxima 

 between the hours of observation, 6'6 lb., and for the maxima at the hours of obsei'vation (or mean), 5*0 lb. 



The maximum pressure of the wind in three months occurs between 1** p.m. and 9^ p.m. ; the greater 

 number of the monthly maxima seem to occur between midnight and noon. 



The monthly maxima occurred on five months while the wind was blowing in the quadrant from N. to W. ; 

 on four months while the wind was blowing from between S. and W. ; on one month while blowing from S. ; 

 and on two months while blowing from between N. and E. 



All the monthly maxima of the daily means occurred with winds from between NW. by W., and SSW. 



