1] _ INTRODUCTION 31 
At 335 metres At 500 metres At 750 metres 
Direction of Direction of Direction of 
wind 
' to to 
1908 .S.E. |N.N.W. .S.E. |N.N.W. S.S.E. |N.N.W. 
January 
February 
March 
April 
May 
June 
July 
August 
September 
October 
November 
December 
_ 
Total 
1909 
January 
February 
March 
April 
May 
June 
July 
August 
September 
October 
November 
December 
jd fel 
— 
4 
1 
3 
5 
6 
6 
3 
4 
12 
3 
8 
9 
Total 
1 To be read clockwise. 
