290 RESULTS OF THE METEOROLOGICAL OBSERVATIONS TAKEN DURING 



The seasonal values show that in Spring the percentage of total possible sunshine 

 received is 37, while Summer has 34 per cent., Autumn 33 per cent., and Winter 29 per 

 cent., while on the mean of the year 34 per cent, is recorded. November is the sunniest 

 month with 41 per cent, of the possiljle, and June the dullest with 24 per cent. The 

 greatest amount of sunshine recorded in any month in the two years was in March 

 1903, viz. 45 per cent, of the total possible, the lowest value, 17 per cent., being re- 

 corded in May 1904. Tlie mean annual number of days with no sunshine is 57, the 

 greatest number being 13 in June 1904, while in January of the same year there was 

 not a day without some. Taking sunless days by seasons, Spring has 9 "5, Summer 5, 

 Autumn 15, and Winter 27 '5. The greatest amount of sunshine is recorded with N., 

 N.W., and W. winds, but in months in which winds from S., S.W., S.E., and N. E. 

 are frequent, sunshine is deficient. 



Wind. 



The wind direction was recorded to sixteen points, but for the purposes of discussion 

 the values have been resolved to eight points by halving the intermediate points between 

 the adjacent octants. Perhaps a more correct method would have been to divide the 

 intermediate points with regard to the relative frequency of the contiguous octants, but 

 for the broad features of seasonal distribution the values obtained may be regarded as 

 close approximations. 



The following are the seasonal values per cent.: — 



Hence the most frequent winds are from the N.W., while the most uncommon are 

 the S.E. There is not much seasonal variation except in the case of S.W. and N.E. 

 winds. The former are nearly twice as frequent in Summer as in Winter, while N.E. 

 winds are at a maximum in Spring and at a minimum in Autumn. Winds from S.E. 

 and E. are very rare, with however a pronounced Summer maximum, which is also 

 shared with winds from the S.W. 



Diurnal Variation in the Wind Direction. 



In order to see whether there was any diurual variation in the wind direction the 

 seasonal observations liave been analysed, with the following results : — 



