| DfsItemData Properties | 
The DfsItemData type exposes the following members.
| Name | Description | |
|---|---|---|
| ItemNumber | 
            Number of item that data belongs to (one-based)
              | |
| Time | 
            Time relative to start of file. Unit is as specified in the temporal axis. 
              | |
| TimeStepIndex | 
            Index of time step that data belongs to (zero-based)
              |