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16:29 — 16:47 Station GN010 (west of Den Helder): 
Secchi depth, CTD profile with rosette sampler. 
pH value, alkalinity, chlorophyll and O, at 5 m depth and about 3 m above bottom. 
RA: Cs-137, Sr-90, Pu, H-3. 
W&S: Bft. 1, 350°, 1023 hPa, Ta = 19.8 °C, fine, Tw= 18.4 °C, S = 34.72 psu. 
20:28 — 20:59 Station GN011 (west of Ijmuiden): 
STD profile with rosette sampler. 
pH value, alkalinity, chlorophyll and O, at 5 m depth and about 3 m above bottom; 
tenfold determination of chlorophyll at 5 m. 
RA: Cs-137. 
OG: 2x100 L nonpolar, 1x5 L polar, 5 m depth. 
W&S: Bft. 2, 360°, 1023 hPa, TA = 17.2 °C, obscured sky, Tw= 19.4 °C, S = 32.53 
DSU. 
Friday, August 31°, 2018 
L 01:10 — 01:35 Station GN012 (west of Hoek van Holland): 
CTD profile with rosette sampler. 
pH value, alkalinity, chlorophyll and O, at 5 m depth and about 3 m above bottom. 
RA: Cs-137, Sr-90, Pu, H-3. 
OG: 1x100 L nonpolar, 2x5 L polar, 5 m depth. 
W&S: Bft. 2, 120°, 1023 hPa, TA = 17.6 °C, obscured sky, Tw= 
PSU. 
05:43 — 06:11 Station GN013 (Rabsbank): 
Secchi depth, CTD profile with rosette sampler. 
pH value, alkalinity, chlorophyll and O2 at 5 m depth and about 3 m above bottom. 
RA: Cs-137, Sr-90, Pu, H-3. 
OG: 1x100 L nonpolar, 1x5 L polar, 5 m depth. 
W&S: Bft. 1-2, 150°, 1023 hPa, Ta = 17.3 °C, partly cloudy, Tw= 19.3 °C, S = 34.56 
PSU. 
09:45 - 11:1 Station GN014 (Outer Gabbard): 
Secchi depth, CTD profile with rosette sampler. 
pH value, alkalinity, chlorophyll and O2 at 5 m depth and about 3 m above bottom. 
RA: Cs-137, Sr-90, Pu, H-3. 
OG: 1x100 L nonpolar, 1x5 L polar, 5 m depth. 
W&S: Bft. 3, 30°, 1024 hPa, Ta = 19.6 °C, fine, Tw= 19.1 °C, S = 34.75 psu. 
14:19 — 14:36 Station GN015 (east of Lowestoft): 
Secchi depth, CTD profile with rosette sampler. 
pH value, alkalinity, chlorophyll and O2 at 5 m depth and about 3 m above bottom. 
RA: Cs-137. 
W&S: Bft. 1, 90°, 1024 hPa, Ta = 21.6 °C, fine, Tw= 19.1 °C, S = 33.96 psu 
16:43 — 16:59 Station GN015B: 
CTD profile with rosette sampler. 
RA: Cs-137. 
W&S: Bft. 1-2, 80°, 1024 hPa, Ta = 19.0 °C, fine, Tw= 19.0 °C, S = 34.19 psu 
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