TIDES AND CURRENTS IN BOSTON HARBOR 



91 



Table 43. — Temperature and density of sea water. Commonwealth Pier No. 5, 

 1921-1926~Qoni\n\x(id 



Temperature, °C. 



Mean Warmest Coldest 



Density at 15° C. 



Lightest 



January 



February.. 



March 



April 



May 



June 



July 



August 



September. 



October 



November. 

 December.. 



Means and extremes . 



January 



February.. 



March 



April 



May 



June 



July- 



.\ugust 



September. 



October 



November. 

 December.. 



Means s 



January 



February.. 



March 



.\pril 



May 



June 



July 



-August 



September. 



October 



November. 

 December.. 



Means and extremes. 



2.1 

 6.1 

 9.5 

 13.9 

 16.6 

 17.3 

 15.8 

 11.8 

 8.1 

 2.6 



-1.0 

 1.1 

 3.5 

 7.7 

 10.8 

 15.8 

 17.2 

 19.2 

 17.3 

 11.0 

 7.0 

 3.7 



14.0 

 17.7 

 19.6 

 16.8 

 12.8 

 8.5 



3.5 

 .5 

 4.5 

 8.8 

 11.0 

 18.8 

 18.8 

 20.0 

 19.0 

 15.0 

 11.5 



-0.5 

 -1.0 

 .5 

 3.2 

 8.2 

 10.0 

 14.5 

 15.2 

 12.8 

 9.8 

 5.2 

 -.5 



1.0213 

 1. 0220 

 1.0211 

 1. 0197 

 1. 0201 

 1.0218 

 1. 0224 

 1. 0223 

 1. 0212 

 1. 0223 

 1. 0227 

 1. 0229 



.0216 



-.2 

 2.7 

 6.0 

 10.0 

 12.5 

 18.5 

 19.2 

 21.2 

 20.5 

 14.2 

 8.5 

 6.5 



21.2 



-1.8 

 -1.2 

 1.0 

 6.5 

 8.8 

 13.5 

 15.2 

 17.8 

 14.2 

 7.5 

 4.2 

 



1. 0229 

 1. 0214 

 1.0208 

 1. 0207 

 1. 0220 

 1. 0225 

 1. 0230 

 1. 0229 

 1. 0228 

 1. 0231 

 1. 0227 

 1. 0217 



1. 0222 



1. 0210 

 1. 0215 

 1. 0226 

 1. 0230 



1. 0226 

 1. 0231 

 1. 0232 



1. 0227 

 1.0226 



.0223 



1. 0224 

 1. 0228 

 1. 0226 

 1. 0216 

 1. 0217 

 1. 0222 



1. 0229 



1. 0230 

 1. 0223 

 1. 0229 

 1. 0231 

 1. 0234 



1. 0234 



1. 0237 

 1. 0230 

 1. 0229 

 1. 0221 

 1. 0226 

 1. 0231 

 1. 0233 

 1.0233 

 1. 0233 

 1. 0233 

 1. 0230 

 1. 0232 



1. 0234 



1. 0231 

 1. 0223 

 1. 0226 



1. 0228 



1. 0232 

 1. 0234 



1. 0229 

 1. 0234 

 1. 0238 

 1. 0234 

 1. 0235 



1. 0194 

 1. 0209 

 1. 0175 

 1. 0160 

 1.0171 

 1. 0208 

 1. 0218 

 1. 0212 

 1. 0189 

 1. 0214 

 1. 0223 

 1. 0225 



1. 0202 

 1. 0170 

 1.0177 

 1. 0174 

 1. 0213 

 1.0211 

 1. 0217 

 1. 0220 

 1. 0218 

 1. 0227 

 1. 0220 

 1.0167 



1.0237 I 1.0167 



1. 0213 

 1. 0215 

 1. 0170 

 1. 0165 

 1. 0191 

 1. 0212 



1. 0214 

 1. 0221 

 1. 0228 

 1. 0225 

 1. 0223 

 1. 0217 



1.0165 



For reference to above table, see p. 



