GTSPP QC Flags 
Time,Position,Depth,Temperature,Salinity
 |No quality control (QC) has been performed on this element.
0|No quality control (QC) has been performed on this element.
1|QC has been performed; element appears to be correct.
2|QC has been performed; element appears to be inconsistent with other elements.
3|QC has been performed; element appears to be doubtful.
4|QC has been performed; element appears to be erroneous.
5|The value has been changed as a result of QC.
6|Reserved.
7|Reserved.