Normal level of accuracy is ASDEX (± 2%), D3D (± 1%), JET (± 1%), JFT2M (± 1%), PBXM (± 1%), PDX (± 1%). $ Q BT $ 3 $ T $ vacuum toroidal field at geometric axis $ The vacuum toroidal magnetic field in Tesla at RGEO determined from the TF coil current. Positive IP is anti-clockwise when viewed from above.

Normal level of accuracy is ± 1% for all machines. $ Q DELTA $ 3 $ $ mean triangularity $ The mean triangularity of the plasma boundary from an MHD equilibrium fit.

Normal level of accuracy is ASDEX (Na), D3D (± 10%), JET (±10%), JFT2M (± 10%), PBXM (± 25%), PDX (Na). $ ND DELTAU $ 3 $ $ upper triangularity $ The upper triangularity of the plasma boundary from an MHD equilibrium fit. $ NV DELTAL $ 3 $ $ lower triangularity $ The lower triangularity of the plasma boundary from an MHD equilibrium fit. $ NV NE0 $ 3 $ m^-3 $ central electron density $ Central electron density in m