diff --git a/mission_yaml/SEA77_M28.yml b/mission_yaml/SEA77_M28.yml
index f11da87..ea5af1f 100644
--- a/mission_yaml/SEA77_M28.yml
+++ b/mission_yaml/SEA77_M28.yml
@@ -609,7 +609,4 @@ qc:
         comment: Previous deployments with this sensor showed a temporal decrease in CDOM. The copper plate protecting the optics sensor was removed and this issue appears  to be resolved in this mission. The issue with the sensor has not yet been identified, further controls are recommended.More information on the history and updates regarding this issue ( https://observations.voiceoftheocean.org/data/updates).
     cdom_raw:
         value:  3
-        comment: Previous deployments with this sensor showed a temporal decrease in CDOM. The copper plate protecting the optics sensor was removed and this issue appears  to be resolved in this mission. The issue with the sensor has not yet been identified, further controls are recommended. More information on the history and updates regarding this issue ( https://observations.voiceoftheocean.org/data/updates).
-    oxygen_concentration:
-        value:  4
-        comment: Following issues with the oxygen sensor, a 2-point calibration has been performed on date {2023-06-15}. The values at 0 and 100 % saturation are accurate. Absolute Values between these two extremes may be inaccurate. The relative variability is confirmed to be valid and no temporal drift occurs. During tests values that can be outside the manufacturer acceptance range have been observed when compared to the output from a reference sensor. This issue is particularly evident around 100μmol/l. More information on the history and updates regarding this issue (https://observations.voiceoftheocean.org/data/updates).
+        comment: Previous deployments with this sensor showed a temporal decrease in CDOM. The copper plate protecting the optics sensor was removed and this issue appears  to be resolved in this mission. The issue with the sensor has not yet been identified, further controls are recommended. More information on the history and updates regarding this issue ( https://observations.voiceoftheocean.org/data/updates).
\ No newline at end of file
diff --git a/mission_yaml/SEA78_M19.yml b/mission_yaml/SEA78_M19.yml
index 3f4ce62..b4c239f 100644
--- a/mission_yaml/SEA78_M19.yml
+++ b/mission_yaml/SEA78_M19.yml
@@ -598,7 +598,4 @@ qc:
         comment: Previous deployments with this sensor showed a temporal decrease in CDOM. The copper plate protecting the optics sensor was removed and this issue appears  to be resolved in this mission. The issue with the sensor has not yet been identified, further controls are recommended.More information on the history and updates regarding this issue ( https://observations.voiceoftheocean.org/data/updates).
     cdom_raw:
         value:  3
-        comment: Previous deployments with this sensor showed a temporal decrease in CDOM. The copper plate protecting the optics sensor was removed and this issue appears  to be resolved in this mission. The issue with the sensor has not yet been identified, further controls are recommended. More information on the history and updates regarding this issue ( https://observations.voiceoftheocean.org/data/updates).
-    oxygen_concentration:
-        value:  4
-        comment: Following issues with the oxygen sensor, a 2-point calibration has been performed on date {2023-06-15}. The values at 0 and 100 % saturation are accurate. Absolute Values between these two extremes may be inaccurate. The relative variability is confirmed to be valid and no temporal drift occurs. During tests values that can be outside the manufacturer acceptance range have been observed when compared to the output from a reference sensor. This issue is particularly evident around 100μmol/l. More information on the history and updates regarding this issue (https://observations.voiceoftheocean.org/data/updates).
+        comment: Previous deployments with this sensor showed a temporal decrease in CDOM. The copper plate protecting the optics sensor was removed and this issue appears  to be resolved in this mission. The issue with the sensor has not yet been identified, further controls are recommended. More information on the history and updates regarding this issue ( https://observations.voiceoftheocean.org/data/updates).
\ No newline at end of file