from the https://developers.google.com/web/fundamentals/native-hardware/device-orientation document example table

|State                      | Rotation | Acceleration (m/s2) | Acceleration with gravity (m/s2)
|------------------------------------------------------------------------------------------------
|Not moving                 | [0, 0, 0]  | [0, 0, 0]         | [0, 0, 9.8]
|Moving up towards the sky  | [0, 0, 0]  | [0, 0, 5]         | [0, 0, 14.81] 

i can not figure out how it works?