# BLS survey `bp`

Source: U.S. Bureau of Labor Statistics, LABSTAT time-series database (https://download.bls.gov/pub/time.series/bp/). Public domain U.S. government data. Credit: U.S. Bureau of Labor Statistics.

Survey documentation: `bp.txt`.

`*_series.parquet` defines each series_id (labels); `*_data_*.parquet` holds series_id, year, period (M01-M12 monthly, Q0x quarterly, A01/M13 annual), value, footnote_codes; other files map codes to labels.

| file | rows | columns |
|---|---|---|
| bp.alteration | 6 | BP Alteration |
| bp.contacts | -1 |  |
| bp.data.1.AllData | 4631 | series_id, year, period, value, cont_break, status, footnote_exists |
| bp.duration | 1 | All contracts in effect |
| bp.industry | 9 | BP Industry |
| bp.measure | 55 | BP Measure |
| bp.period | 5 | period, period_abbr, period_name |
| bp.periodicity | 2 | periodicity_code, periodicity_text |
| bp.selection | 1 | All contracts in effect in selected period |
| bp.series | 95 | series_id, measure_code, unit_code, periodicity_code, alteration_code, industry_code, contract_duration, contract_selection, seasonal, begin_year, begin_period, end_year, end_period |
| bp.unit | 4 | BP Unit |