36 



U. S. COAST AND GEODETIC SURVEY 



Table 6. 



-Times of High Water and Low Water at Locations Along the 

 Atlantic Coast of the United States 



For reference to above table, see p. 21. 



Table 7. — Current Harmonic Constants, Atlantic Coast Lightships 



[North and east components] 



Constituent 



K2-. 



Lj... 



Mi.. 

 Ma.. 



M3-. 



Ml.. 

 Mil.. 

 Ms.. 

 Nj.. 

 Oi.. 

 Pi- 

 Q..- 

 S,... 

 Sj... 



MU2 



Sa.. 

 Ssa. 



North component 

 (magnetic) 



Veloc- 

 ity 

 H 



(knots) 



Epoch 



Local 

 {«) 

 (de- 

 grees) 



Green- 

 wich 

 (de- 

 grees) 



East component 

 (magnetic) 



Veloc- 

 ity 

 H 



(knots) 



Epoch 



Local 

 M 

 (de- 

 grees) 



Green- 

 wich 

 (de- 

 grees) 



Boston Lightship 



369 days beginning June 8, 1926. 

 netic variation 15° west 



Mag- 



249 

 2/2 

 198 

 234 

 199 

 112 

 151 



74 

 243 

 163 

 309 

 216 

 274 

 235 

 217 

 205 



35 

 143 



North component 

 (magnetic) 



East component 

 (magnetic) 



Veloci- 



ity 



// 



(knots) 



Epoch 



Local 

 M 

 (de- 

 grees) 



Green- 

 wich 

 (de- 

 grees) 



Pollock Rip Slue Lightship 



369 days beginning June 5, 1920. 

 netic variation 15° west 



Mag- 



236 

 347 

 347 



78 

 316 

 242 



69 

 210 

 264 

 275 



75 

 276 



82 

 202 

 332 

 128 

 307 

 108 



K,.. 



K2.- 

 L2--. 



Ml.. 

 M2.. 

 M3.. 



M4.. 



Ms.. 

 Ms.. 

 N2-- 

 O,.. 

 P,... 

 Qi... 



s,... 

 S2-. 



MU2. 



Sa.. 



Ssa . 



Nantucket Shoals Lightship 



369 days beginning September 27, 

 Magnetic variation 14° west 



1913. 



147 

 124 

 110 



86 



85 

 237 



40 



15 

 338 



59 

 113 

 145 



73 

 127 

 120 



29 

 339 

 199 



Nantucket Shoals Lightship 



369 days beginning .^pril 16, 1921. Mag- 

 netic variation 14° west 



151 

 118 

 159 

 110 



81 

 2 



32 

 327 

 189 



49 

 113 

 101 



42 

 194 

 112 

 306 

 287 

 290 



