Comment on ``Unified PCN and PCS indices: Method of calculation, physical sense, and dependence on the IMF azimuthal and northward components'' by O. Troshichev, A. Janzhura, and P. Stauning,
Lukianova, R. (2007),
J. Geophys. Res., 112, A7 p. A07204,
10.1029/2006JA011950.