1018 T. Shoji, H. Kitaura / Computers & Geosciences 32 (2006) 1007-1024 
  
0.2 
| [A mis 
— iit t 
B Ewes 
— REA S 
| | O mx 
— HER S 
  
  
  
  
ARE 2 j 
CO ee = bébés n E tl 
YO 
    
Semivariogram / {log (mm x h1)}2 
© 
  
Time Lag/h 
EEE AE. td 
  
       
   
        
    
72 
Fig. 11. Temporal variograms of hourly precipitations observed though a year (°99) in Chubu (solid triangle), Kanto (solid square), and 
ChuKan (open circle), and their fitted spherical models. Data of all rainy stations (stations recording rain) are summarized by Eq. (1). 
  
Proportion of Rainy Stations / % 
  
  
  
  
  
  
tpn, ChuKan ac Kanto Ra" 
5} "momo H.g EE 
—O— Proportion 
(ChuKan) 
* "& - Proportion (Chubu) 
" "M - Proportion (Kanto) 
0 : | | / 
s 6 12 18 2 
Time/h 
Fig. 12. Proportions of rainy stations at every time in a day through a year (99). The proportions were calculated by Eq. (2). Districts: 
Chubu = dotted line with solid triangles, Kanto = dotted line with solid squares, and ChuKan = solid line with open circles. 
Fig. 
aver: 
squa 
dist 
fact 
not 
rain 
stro 
con 
a de 
dak 
a pe 
less 
con 
con 
app 
of r: 
proj 
vari 
It 
shoi 
floo