314 



bv tlie "Deutsche Seewarie" conlaiii.s valuable data: commencing 

 in 1900, tills |)ul)licati()ii gives ten-day means of baiometric heights, 

 in sucli a \va_v llial three average valnes are always formed for 

 each month. A I (lie same lime normal values are given so that 

 deviations from the normals can he formed at once for tlie purpose 

 of further treatment. In accordance with the results of Table II, 

 the inquiry is restricted to the winter months from December 1900 

 to February 1914 as being the most disturbed; the number of 

 observations therefore amounts to 126. 



From the stations in this publication the following places were 

 chosen, in the equations represented by their rank-number; the 

 values Ö are the standard deviations. 



J . Helder öj = 6.96 mm, 



2. Valencia (W. coast Ireland) <7, = 8.70 „ 



3. Clermont (S. France) a, = 5.98 ,, 



4. Milan (N. Italy) a, = 5.82 „ 



5. Neu fall r wasser (Baltic Sea coast, Pruvssia) o^ = 6.30 ,, 



6. Christiansund (W. coast Norway) ö, = 8.45 ,, 



TABLE III. 



Correlation-coefficients r, factors of precision q and distances D- 



Helder — Valencia . . . 

 Helder— Clermont . . . 

 Helder — Milan .... 

 Helder— Neufahrwasser . 

 Helder— Christiansund . 



Valencia— Clermont . . 

 Valencia— Milan . . . 

 Valencia— Neufahrwasser 

 Valencia— Christiansund . 



Clermont Milan . . . 

 Clermont —Neufahrwasser 

 Clermont - Christiansund 



Milan— Neufahrwasser . 

 Milan— Christiansund 



Neufahrw.— Christiansund 



