20 | Cruise Report, RV ATAIR, Cruise 0671021-1, Bremerhaven - Thyboron —- Aberdeen, 18 Jul - 10 Aug 2023 
values of 5-6 ml/l, this threshold corresponds to 0.055 mI/l. Without correction, the average 
difference of the oxygen data is 0.0967 ml, Le. greater than 1%; with correction, it is well 
below 1%. CTD oxygen was corrected according to: 
Deor (MI/I) = -0.888808751227 + 0.003882681122 * time + 0.021469570016 * oxygen (ml/l) + 
-0.000104482816 * pressure + 0.002460619138 * temperature 
Oxygen saturation was recalculated afterwards. The corrected CTD-derived oxygen data was 
given the quality flag 1 (good data). Any quality control of fluorescence and turbidity data was 
not performed. Thus, the respective data were made available with flag 0 (no quality control 
applied). 
STABILE: 
AT 
“x U 911 
AyQll 
17 
Se EC EEG 
ES A 
CE 
En deviatio 
A mean 
AUTOSAL - TSC1 
Number of data pairs 1 
percentage 
Mean difference 
Median difference 
Standard deviation 
JE 
.0.004* 
-0.0015 
0.0358 
"5 
rl 
99 5% 
0.0016 
-0.0014 
0.0079 
1C5 
824% 
-0.0006 
-0.0009 
0.0036 
AUTOSAL —- TSC2 
Number of data pairs 
percentage 
Mean difference 
K 
3 
1 
-0.0030 
—— 
Median difference -0.0010 
Standard deviation 
0 02361 
123 
98% 
-0.0007 
-0 0010 
00072 
161 
82% 
-0.0005 
-0.0010 
0 00392 
Table 5.3. Results of the comparison between bottle salinity samples obtained from salinometer meas- 
urements (AUTOSAL) and conductivity/salinity recordings at the time of closing the Niskin bottles, the 
latter obtained from the two CTD sensor packs (TSC1 and TSC2).