Significant linear declines (p < 0.05) in DO were observed
at 27 (24) stations at 100 m (50 m), with the largest decline
at 50 m at Station 87.40 of 2.13 mmol/kg/y. The largest
DO declines occurred during summer (July–September) on
the shelf and within the SCB, and during autumn (October–
November) within the California Current core (not shown).
A higher number of stations had significant DO declines at
mid-depths (52 stations at 200 m, 47 at 300 m), with the
largest declines (1.8 mmol/kg/y) on the offshore end of
Lines 90 and 93. DO trends at 400–500 m were smaller