(color online) Integrated (a) Ps(1s), (b) Ps(2s), (c) Ps(3s), and (d) Ps(4s) formation cross sections for positron impact on H(2s). The results of CBA model by Fojò et al.,^[11,12] FBA and DWT methods by Ghoshal and Mandal^[13] and Nayek and Ghoshal^[14,15] are shown for comparison.