Use the import service to import CL-VIEW DAT files to BL-View. If the DAT files have been logged with other than the 16-second interval, see Changing Message Interval in Import Files. If you want to add the ceilometer name, latitude, longitude, altitude, and UTC offset information to the import files, see Changing Ceilometer Identification Data in Import Files. Copy the files that you want to import to the following folder: C:\Program Files (x86)\Vaisala\BL-View\config\LevelOneImport. To open command prompt, select Start, right-click on Command Prompt, and select Run as administrator. In command prompt, to go to the main level, type: cd C:\ To go to the folder that contains the application for running the import, type: cd C:\Program Files (x86)\Vaisala\BL-View\bin To restart the service, type: roaadmin.exe reload To run the import, type: level_one_import.exe The import can take a long time depending on the number of DAT files. The import stops when all DAT files are processed.