62 H. MOHN. METEOROLOGY. [2nd. arc. exp. fram 



In their last horizontal row, the Tables give the monthly means for 

 each alternate hour as the means of the respective vertical columns. 

 The mean for the whole month is the mean of the numbers in the 

 vertical column headed Mean, or of the numbers in the horizontal row 

 of means. The three last columns contain the minimum and the maxi- 

 mum temperatures of each day and their difference, and the last row 

 the monthly means of these 3 columns. 



At the head of the Tables stand the year, the month, the name of 

 the winter-station, the latitude rp, the longitude X, and the height of the 

 thermometer above the sea or ice, h, in metres. 



Interpolated numbers in italics. 



