276 



H. MOHN. METEOROLOGY. 



[NORW. POL. EXP. 



By means of Lambert's formula I have computed from these numbers: 1, the 

 N — , E — , S — and W — components of the winds' direction for the different 

 hours of observation, and their means for the day; 2, the deviations from the 

 daily means, for each hour; 3, the difference N— S, and E— W; and from 

 these, 4, the resultant direction (Dir.) and frequency (Res.) for each hour and for 

 the daily means. The direction is given both in the usual quadrantal manner and 

 also reckoned from North over East round the horizon. From the last numbers 

 are deduced in the column „shift" the shifting of the direction of the vv'ind, a + 

 meaning a shifting with the sun (veering), and a— against the sun (backing) i). 



WIND-FREQUENCY-COMPONENTS. DARK SEASON. OCT.-FEBR. 



Regarding the method of computation see Dr. JuUus Hann's Lehrbuch der Meteorologie, p. 402. 



