HAEMONIC AISTALYSIS AISTD PREDICTION OF TIDES. 



149 



if tabulations have been made in astronomical time for a locality 

 "where the civil time is based upon the meridian 15° E., the value for 

 5' should be taken as —15 + 180, or 165°. If tabulations have been 

 in Greenwich astronomical time, S should be taken as 180°. 



Form 244O', ^og F and arguments for ^imination (Jig. 28) . — Items 

 (1) to (11) are compiled here for convenience of reference for this and 

 Porm 452. Items (1) to (6) are obtained from values given in Form 

 244. Item (7) is obtained from Table 7, using items (2) and (3) as 

 arguments, and item (8) is obtained from Table 9, using item (3) as 



Form 344a 



Station 



• TIDES: Log F and Argomants for Elimination. 

 l&ort'a, California. 



Length of series 163 d-ays. 



Series ^>9fdn8 1919. ' Feb. 





(1) » N » Item (6) from Form 244 = 245?11 



(2) « I s Iteir, (7) from Form 244 » 21.76 



(3) ■ P « it8m(l2) from Form'244 = 53.03 



(4j ■ (b-^») =' Item (3) - Jt item (10),from Form 244 » 327* 



(5) » (b-v" ) = Item (3) - | Item (11) ,frQm Form 244 = 331 



(6) ■ (b-Pi ) « item (3) - Item ( 4), from Form 244-41 



(7) • Log E^ from Table 7 ■ 9.9657 

 C8>- ■ Log Q^ from Table 9=9. 8592 



»(9) » Natviral number from Log F(Ei) ■ 1.038 



(10) ■ Log f (Ks) = 10 -'i,og FCKg) » 9.9528 



(11) = JTatTsral number fCKg) from (10) ■ 0.897 



Fig. 28. 



argument. Items (9) to (11) are obtained after the rest of the form 

 has been filled out. 



The log F ioY each of the listed components, except Lj and M^ and 

 those for which the logarithm is given as zero, may be obtained from 

 Table 12, using item (2) as the argument. For components Lj and 

 M, 



Log F(h^ =log ^(Mj) +item (7) (490) 



Log F(Mi) =log F(Oi) +item (8) 



(491) 



If the tidal series analyzed was observed between the years 1900 

 and 2000, the log ^(Lj) and log F(MJ may be taken directly from 



