As far as I understand sensor reports values in g units. So 1 for z axis when laying flat means not 1m/s², but 1g (9.81m/s²). The same for other axis. So it's either should have g as measurement units, or conversion to m/s², but g is not the same for different locations on the Earth, so maybe adding it as parameter or what would be more appropriate leave it in g units.
As far as I understand sensor reports values in g units. So 1 for z axis when laying flat means not 1m/s², but 1g (9.81m/s²). The same for other axis. So it's either should have g as measurement units, or conversion to m/s², but g is not the same for different locations on the Earth, so maybe adding it as parameter or what would be more appropriate leave it in g units.