Table 3. - Average monthly plankton volumes in the area off southern California and adjacent 

 northern Baja California (lines 80-107) for the months of January through July and 

 October through December, 1951-1959. 



Table 4. 



Average monthly plankton volumes in the area off central Baja California (lines 110- 

 137) for the months of January through October, 1951-1959. 



Volumes for 1959 are underlined when they are the lowest in the series of 9 years. 



