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- HA (hectares),
- HD (heads),
- THS_HEADS (1000 heads),
- HIVE (hives),
- LSU (livestock units),
- EUR (euro),
- PLC (places),
- PERS (persons), or
- AWU (annual working units).
Examples include permanent crops (HA), plants harvested green (HA), pigs (LSU), live bovine animals (HD), poultry (THS_HD), total livestock units (LSU), family labour force (AWU), non-family labour force (PERS) or Laying hens (PLC).
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- for total of continuous variables and some ratios, the system is based on the values of coefficients of variation:
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Where totals are zero in tables, the corresponding coefficients of variations cannot be technically computed (because they are obtained dividing by zero) and are calculated null (.). The quality rating system classifies these cases as "below 24.99%", which means the zero totals are published.
- for proportions, the shares and some ratios the system is based on the values of standard errors:
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