Headcount the figures are based on (NOT a salary); negative or null when suppressed.
Median gross monthly earnings in EUR (NOT the mean); negative (-1) or null when suppressed.
Lower quartile (Q25) in EUR; negative (-1) or null when suppressed.
Upper quartile (Q75) in EUR; -2 when above the contribution ceiling, -1 or null when suppressed.
KldB-2010 occupation code (string — preserves leading zeros).
One earnings observation for a (KldB × region × gender × age × level × branch) slice.