196 University of Calif ornia Publications. [Vol.6 



Hourly Averages. 



THE BEGION SOUTH OF SAN DIEGO BAY. 



From August 26 to September 5, 1908, a trip was made due 

 south of Sau Diego to latitude 28°, then east to Cerros Island, 

 then north along a line from two to ten miles from the coast. 

 Four hundred and fourteen temperature and four hundred and 

 two density measurements were taken; sixty-one temperatures 

 were less than 16.5° and fourteen were less than 15.0°. The 

 minimum temperature was 13.0°, the maximum 21.85°, the 

 average being 19.22. 



The minimum density was 1.02447, the maximum was 1.02-191. 

 The following table shows the hourly and daily averages. Num- 

 bers in italics are not used in the final averages: 



Hourly Averages. 



Daily 

 Date 0-3 3-6 6-9 9-12 12-15 15-18 18-21 21-24 Average 



8 26 ms 17.6 17.9 19.86 20.92 20.04 19.32 18.88 19.27 



8/27 (0) (1) (8) (9) (10) (9) (8) 



8/27 18.35 18.65 18.77 18.92 18.37 19.2 1S.9 18.81 



8/28 (9) (10) (8) (9) (9) (9) (0) 



8 L".> 19.07 19.37 2H.1 20.32 20.25 19.95 19.S4 



8/30 (0) (7) (10) (8) (10) (0) 



8/30 211.0 211.:! 19.2s 18.91 18.84 18.54 19.57 19.31 



8/31 (0) (2) (4) (6) (9) (10) (8) 



8 .".1 18.95 19.05 17.54 17. 82 20.0 20.38 19.0 18.97 



9 1 (10) (9) (9) (9) (9) (9) (1) 



9/1 19.5 19.54 20.8 20.9 20.6 20.3 20.28 



9/2 (2) (8) (9) (7) (0) (0) 



