PLATE XXI. 



Downfall curves. 



The crossed lines ( ) represent the monthly average downfall of the year 1899, and the straiglit lines ( ) show the 



monthly values for 



T. iSvolvær (black curves). 

 II. fSkomvær (blue curves). 



III. Tromsø (red curves). 



IV. Alten (green curves). 



From „Nedbøriagttagelser i Norge" ed. by „Det norske meteorologiske institut". 



