Table 9. Characteristics of numeric variables for the file (liquid92.dat) containing the liquid fuel
statistics from the United Nations Energy Statistics Database
| Number of | Minimum | Maximum | ||
| Variable | observations | value | value | Mean |
| COUNTRY | 124909 | 4.00 | 894.00 | 431.90 |
| YEAR | 124909 | 1950.00 | 1992.00 | 1974.17 |
| QUANTITY | 124909 | -461873.00 | 606800.00 | 614.67 |