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Ref. No. [UMCES] CBL 2015-008

ACT VS15-01

34

A cross-plot of the matched observations is given in figure 13. A linear regression of the

data was statistically significant (p<0.001), however the correlation was quite low r

2

= 0.18. The

slope of the regression was 0.67 with an intercept of 2.82.

Figure 13.

HIMB field response plot of Campbell Scientific Instruments (CSI) pH sensor deployed with

antifouling copper screen compared to reference pH

Total

samples. Fine dotted line represents 1:1

correspondence, coarse dotted line represents correspondence predicted based on difference between

pH

NBS

and pH

Total

in seawater (pH

NBS

= pH

Total

+ 0.13).