CORRELATION. 



i9t 



simultaneous but overlap for different periods. The discussion of the records will therefore 

 require different methods for the various stations, and we will commence with the records for 

 Hut Point, Snow Hill, the Gauss Station and Kerguelen during the period March 1902 to 

 February 1903. The following table gives the variation of pressure for each month from the 

 mean of the twelve months. 



Table 116. 

 Pressure departure from mean of twelve months. 



These values have been plotted in the four upper curves of figure 60. The similarity 

 between the curves for the stations on or near the Antarctic Continent is striking ; while the 

 relationship is apparent, but much less marked, on the Kerguelen curve. 



The intimate relationship is shown by the following correlation coefficients, the probable 

 error of each being shown by the figures in brackets. 



Table 117. 

 Pressure Correlations. 



* For 13 clays only, therefore neglected in the discussion. 



