THE RAINFALL OF GUERNSEY. 



91 



I have given in Table III. the mean rainfall of all 

 the stations, compared with that of Hauteville, for the period 

 of five years. The Hauteville curve for this period varies 

 very much from the 59 years' average. 



This period gives lower quantities of rain for the months 

 January, July, October, September and November, greater 

 rainfall for February, April, May and December, while 

 March, June and August are so near the average that they 

 may be looked upon as normal. 



We thus see that 1901 gave more rain in the spring 

 and less in the autumn than usual, and that this is also true 

 of the mean of the last five years. These curves suggest 

 further study of previous short periods, but I have not 

 found it possible to devote time to this investigation so far. 



The total mean annual rainfall for the period of five 

 years for each station is not given, owing to the labour and 

 time required to produce the tables, but the mean of all 

 the stations for this period is found to vary from the mean 

 of Hauteville, for the same period, by 3*41 inches and 

 from the average of 59 years by 5*37 inches. 



The corrected rainfall for the island, as shown by these 

 differences, is 33*16 inches instead of 36*57 inches. The 

 island is thus proved to be drier than the town. The cause 

 of this difference I have discussed in previous papers ; it is 

 therefore unnecessary for me to repeat my former arguments. 



TABLE IV. 



THE WET DAYS OF EACH STATION COMPARED WITH THE 

 AVERAGES.— 1901. 



January . . 

 February . . 



March 



April 



May 



June 



July 



August 

 September 

 October . . 

 November 

 December 



22 



13 



23 



19 



9 



4 



8 



9 



17 



16 



13 



23 



17 



11 



21 



19 



8 



2 



5 



7 



11 

 16 

 13 

 21 



19 



16 



23 



18 



8 



4 



7 



7 



14 

 16 

 14 

 25 



16 

 11 



22 



18 



7 



4 



6 



8 



11 



15 



13 



22 



Averages. 



Of 1901. 



18 



12 



22 



18 



8 



3 



6 



7 



13 



16 



16 



24 



1 Stations. 

 Five Years. 



21 

 14 

 16 

 17 

 9 



10 

 13 

 16 

 16 

 21 



Of 59 



Years. 



19 

 15 

 15 

 13 

 11 

 11 

 11 

 12 

 14 

 19 

 19 

 19 



The Year 176 151 171 153 



163 



167 



178 



