| Item | Valid Range |
|---|---|
| Year | 1938 to present |
| Month | 1 - 12 |
| Day | 1 - last day in month |
| Observation Hour | 0 - 23 |
| Launch Time Hour | 0 - 23 |
| Launch Time Minutes | 0 - 59 |
| Pressure | 1100 - 0.1 hPa |
| Geopotential Height | -1000 to 70,000 m |
| Temperature | -120 to 270 °C |
| Dewpoint Depression | 0 to 70 °C |
| Wind Speed | 0 - 150 m/s |
| Wind Direction | 0 - 360° |