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Ref. No. [UMCES] CBL 2015-014
ACT VS15-07
43
A cross-plot of the matched observations of EXO-pH2 and reference pH is given in
figure 22. The linear regression was statistically significant (p<0.001, r
2
=0.57) with a slope of
1.27 and an intercept of -2.05.
Figure 22.
HIMB field response plot of EXO-pH2 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).
A regression of pH measured by EXO-pH1 and EXO-pH2 was highly significant
(p<0.001, r
2
=0.84) with a slope of 1.34 and intercept of -2.90 (data not shown).