l8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I39 



fairly similar, though differing in phases. Making this assumption, 

 I combine into one table a-jDxCxaJozCi, merely changing the phases to 

 give best accord, and similarly I combine a 1 \b\c' \a! ' 2 b' \c { \ into a single 



Table 5. — Grouping of six tables when SS > 20. Period of g-1/10 months. 



Eastport, Me. 



First half of the records, 1891 to 1920 



table. I give samples of this simplification here in tables 5 and 6 for 

 SS>20. Figure 9 shows the matter graphically. 



The final combinations of two sets of six tables each, with phases 

 shifted to harmonize, is given in figure 9 and table 7, both from East- 

 port data. 



