| Variable | Obs | Mean | Stad. Dev. | Min | Max | |
| year | All | 1084866 | 1999.62 | 10.57 | 1980 | 2016 |
| age | All | 1084866 | 39.36 | 11.60 | 18 | 65 |
| Manufacturing | 376957 | 38.34 | 11.38 | 18 | 65 | |
| Service | 707909 | 39.90 | 11.69 | 18 | 65 | |
| ln(wage) | All | 1084866 | 3.09 | 0.68 | 0.0003 | 13.00 |
| Manufacturing | 376957 | 3.05 | 0.59 | 0.0021 | 9.45 | |
| Service | 707909 | 3.11 | 0.73 | 0.0003 | 13.00 | |
| educ | All | 1084866 | 14.13 | 2.05 | 12 | 18 |
| Manufacturing | 376957 | 13.36 | 1.71 | 12 | 18 | |
| Service | 707909 | 14.55 | 2.10 | 12 | 18 | |
| weeks | All | 1084866 | 49.45 | 7.84 | 1 | 52 |
| Manufacturing | 376957 | 49.11 | 8.17 | 1 | 52 | |
| Service | 707909 | 49.62 | 7.65 | 1 | 52 | |
| hours | All | 1084866 | 42.98 | 12.27 | 1 | 99 |
| Manufacturing | 376957 | 42.14 | 10.73 | 1 | 99 | |
| Service | 707909 | 43.43 | 13.00 | 1 | 99 | |
| married | All | 1084866 | 0.67 | 0.47 | 0 | 1 |
| Manufacturing | 376957 | 0.67 | 0.47 | 0 | 1 | |
| Service | 707909 | 0.66 | 0.47 | 0 | 1 | |
| child | All | 1084866 | 0.90 | 1.13 | 0 | 9 |
| Manufacturing | 376957 | 0.94 | 1.15 | 0 | 9 | |
| Service | 707909 | 0.88 | 1.13 | 0 | 9 | |
| supply | All | 37 | 51.44 | 0.89 | 50.16 | 53.45 |
| Manufacturing | 37 | 81.71 | 2.80 | 78.06 | 85.60 | |
| Service | 37 | 42.34 | 1.17 | 39.29 | 44.13 | |