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Ref. No. [UMCES] CBL 2016-012
ACT VS16-03
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The global response of the SBS HydroCAT for all nine temperature-salinity trials is shown
in figure J. This plot includes all instrument-reference comparisons. Instrument readings were
highly correlated across the entire range of DO concentrations (hypoxic to supraoxic) covering all
temperature and salinity ranges tested. A linear regression of the data (n=336; r
2
= 0.999;
p<0.0001) produced a slope of 0.989 and intercept of 0.0645.
Figure J.
Concordance of the SBS HydroCAT (SN 03710297) oxygen measures paired with
discrete Winkler DO reference samples. In general readings are well correlated across a range of
DO concentrations (hypoxic to supraoxic). Offsets in instrument readings increase at higher DO
levels and with salinity. Dotted line represents perfect agreement between the two measures.