TABLE 4.
RMS equation applied to the duration values collected for different test regimes and parts of the head.
| Front | Back | |||||
|---|---|---|---|---|---|---|
| Designed pressure level (kPa) | No helmet | Helmet | Helmet liner | No helmet | Helmet | Helmet liner |
| 27.5 | 4.3 | 4.1 | 4.3 | 4.7* | 4.5* | 4.6* |
| 55.1 | 5.0 | 3.7 | 4.4 | 5.6* | 4.2* | 4.6* |
| 82.7 | 2.8 | 3.3 | 3.3 | 3.6* | 3.8* | 4.2* |
| 110 | 3.1 | 3.0 | 3.1 | 3.7* | 3.7* | 4.0* |
| 138 | 2.7 | 3.1 | 3.4 | 3.2* | 3.6* | 3.9* |
| 165 | 3.6 | 2.0 | 2.0 | 4.2* | 2.7* | 2.0 |
Legend (kPa): 
*Higher value when comparing front and back.
A legend indicates differences in the magnitude of the duration within each designated pressure level. Values of the higher magnitude comparing the front and back of the head are indicated with an * to show the difference, if values were equal then neither have an *.