344 H. MOHN. METEOROLOGY. f2ND ARC. EXP. FRAM 



The number of days with precipitation is greatest in September (15) 

 and least in January (6); and it is greater in summer than in winter. 

 The year has 133 days with precipitation or 36.5 per cent. Each third 

 day has precipitation. 



The number of iiours of precipitation in one day of precipitation 

 has a maximum in May (9 — 10) and another maximum in October (8). 

 It has one minimum in Februaiy or March (6) and a secondary mini- 

 mum in August (6—7). The mean for the year is 7 to 8 days. 



