| Level | Classification | Name |
| 1 | RootDir | Download or Processing or Result |
| 2 | Station | StationID_StationName |
| 3 | Point | PointID_InstrumentType |
| 4 | DataKind | RawData or Pre-processData or CustomDir |
| 5 | TimeZone | UT or BJ or LT or ZT |
| 6 | SamplingRate | Second or Minute or Hour or Day or other |
| 7 | Item | ItemID or CustomDir |