cert_level
-3
|
filtered
de
|
| -2
|
don't know/invalid
de
|
| -1
|
refuse
de
|
| 1
|
A1 Level
de
|
| 2
|
A2 Level
de
|
| 3
|
B1 Level
de
|
| 4
|
B2 Level
de
|
| 5
|
C1 Level
de
|
| 6
|
C2 Level
de
|
