HAHMONIC ANALYSIS AND PEEDIGTION OP TIDES. 



143 



Form 142, stencil sums (figs. 25 and 26). — The sums for each com- 

 ponent hour are entered in Form 142, one Hue of the form being used 

 for each page of the original tabulations. The total of the hour sums 

 in each line of the form must equal the corresponding page sum of 



Tabulated by M.T^.S. 



Date Apr.22,*19. Summed by g.A.K»- 



. mt^HOT. 22, 1920, 



Fig. 22. 



the hourly heights in Form 362, this serving as a check on the sum- 

 mation. After the summing of all the pages of the series has been 

 completed for any component the totals for each component hour 

 are obtained, the divisors from Table 32 entered, and the component 

 hourly means computed (fig. 26). These means should be carefully 



