| Code/Flag Figure |
Description |
Status |
|
0
|
Secondary sampling: averaged
|
Operational
|
|
1
|
Secondary sampling: discrete
|
Operational
|
|
2
|
Secondary sampling: mixed
|
Operational
|
|
3
|
Near-surface sampling: averaged, pumped
|
Operational
|
|
4
|
Near-surface sampling: averaged, unpumped
|
Operational
|
|
5
|
Near-surface sampling: discrete, pumped
|
Operational
|
|
6
|
Near-surface sampling: discrete, unpumped
|
Operational
|
|
7
|
Near-surface sampling: mixed, pumped
|
Operational
|
|
8
|
Near-surface sampling: mixed, unpumped
|
Operational
|
|
9-14
|
Reserved
|
Operational
|
|
15
|
Missing value
|
Operational
|