# BLS survey `nc`

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

Survey documentation: `nc.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 |
|---|---|---|
| nc.area | 190 | 00, 9957, All United States, 0, T, 1 |
| nc.baseline | 0 | 2004, M07, +051.61, +005.15 |
| nc.contacts | 10 | National Compensation Survey Contacts |
| nc.data.1.AllData | 368675 | series_id, year, period, value, footnote_codes |
| nc.factor_item | 45 | factor_number, factor_item_number, factor_item_coefficient |
| nc.level | 17 | level_code, level_name |
| nc.mogocc | 520 | mogocc_code, mogocc_name |
| nc.occupation | 519 | 00, 000, Unnamed: 2, All occupations, N, 0, T, 1 |
| nc.series | 59990 | series_id, state_code, area_code, mog_code, occupation_code, level_code, footnote_codes, begin_year, begin_period, end_year, end_period |
| nc.starea | 191 | state_code, starea_code, starea_name |
| nc.state | 55 | state_code, state_name |