Contents Part IV: Post Tutorials | Chapter 1: Calculate Ooccupant Injury Criterion | Print page 1.2. Specify Unit System SettingsClick Main menu > Settings > Post Settings.Select Hic/Csi Constants.Select Time Units: msec.Select Gravity Constant: 0.00981.Note: These are the appropriate selections for a kg-mm-ms unit system.Click Apply.Click File > Save > Save Config (to save these settings to the .lspostrc configuration file for future use). « 1.1. Open Crash Model Results 1.3. Generate HIC Plot »