1898-1902. No. 4.] 



PRESSURE. 



51 



THE DAILY PERIOD. 



The numbers in the last row in the Tables on pp. 6—50, giving 

 the monthly means of the pressure for each even hour have been cor- 

 rected for the march of the pressure during the month, and reduced to 

 Noon in the usual manner^. The mean of the reduced 12 values has 

 been taken, and the deviation of each of the 12 numbers from this 

 mean computed. The following Tables contain these deviations, ex- 

 pressed in hundredths of a millimetre. Minus indicates below, plus 

 above the mean. 



PRESSURE. DAILY PERIOD. 0.0! mm. 

 January. 



February. 



March. 



31 

 31 

 31 

 31 



' H. Wild. Die Temperaturverhaltnisse des Russischen Reiches. Erste Halfte. 



p'g. 



