ANNUAL SUMMARY FOR 1893. 



PRESSURE. 



In Inches. 

 Actual max. reading, . . 30.61, Dec. 14th, 9 a.m. 

 Actual min. reading, . . 28.69, Feb. 20th, 1 A.M. 



Mean reduced to sea level, 30.047 



Annual range 1.92 



*AIR TEMPERATURE. 



In Degrees Fahr. 



Highest 96, .Tune 2nth ; 96, Aug. lOth 



Lowest, —3; —13, Jan. 17th 



Mean, 47.7; 45.4 



Annual range, 99. ; 109. 



Highest mean daily, . . . 83.S; 7S.5, June 20th 

 Lowest mean daily, . 4.7, .Jan. 17th; 0, Dec. 14th 



Mean ^laximum, 55.7; 57.2 



Mean Minimum 39.9; 33.5 



Mean daily range 12.7; 23.7 



Greatest daily range, . 38, Feb. 6th; 45 May 11th 

 Leastdaily range, . 1, Feb. 13th; 7, March llth 



HUMIDITY. 



Mean dew point 37.9 



Mean force of vapor 4145 



Mean relative humidity, 71.1 



WIND. 



Prevailing Directions. 



North, 16;; 



South West 15^; 



North West, ]4f» 



South Il5« 



Total movement 52411 m. 



Greatest daily movement, . . .486 m., Oct. 14th 



Least daily movement 5 m., Jan, 23d 



Mean daily movement, 143.6 m. 



Mean hourly velocity 6 m. 



Max. pressure per sq. ft., 37i lbs.=865 m. per 

 hour, Aug. 29th, at 3 P. M. 



PRECIPITATION. 



Total rain-fall or melted snow, .... 46.94 in. 

 Number of days on which .01 inch of rain 



or melted snow fell, 143 

 Total snow fall in inches, 74J in, 



WEATHER. 



Mean cloudiness observed .50^; 



Total cloudiness recorded by the Sun 



Thermometer, 2434 hrs. or .54 >' 



Number of clear days, 101 



Number of fair days, 96 



Number of cloudy days, 168 



RRIGHT SUNSHINE. 



Number of hours recorded, 2072 



Mean Ozone, 31';; 



DATES OF FROSTS. 



Last, May 8th 



First, Sept. 3d 



D.iTES OF SNOW. 



Last, April 2lst 



Fii'st Nov. 4th 



*The first figures denote reading at top of tower, the second at base. 



