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A spectrum of a hot spot, produced by radiation of accretion shock at T Tauristar's surface, has been calculated taking into account non-LTE effects forHeI, HeII, CaI and CaII, using LTE-calculations of spot's atmosphericstructure, calculated by Dodin & Lamzin (2012). Assuming that pre-shock gasnumber density N_0 and its velocity V_0 are the same across the accretioncolumn, we calculated spectra of a system "star + round spot" for a set of N_0,V_0 values and parameters, which characterized the star and the spot.  It has been shown that theoretical spectra with an appropriate choice of theparameters reproduce well observed veiling of photospheric absorption lines inoptical band as well as profiles and intensities of so-called narrow componentsof HeII and CaI emission lines in spectra of 9 stars. We found that theaccreted gas density N_0>10^{12} cm^{-3} for all considered stars except DKTau. Observed spectra of 8 stars were succesfully fitted, asuming solarabundance of calcium, but it appeared possible to fit TW Hya spectrum onlyunder assumption that calcium abundance in accreted gas was three times lessthan solar. We derive spot's parameters by comparison of theoretical andobserved spectra, normalised to continuum level, so our results are independenton unknown value of interstellar extinction.  We have found that the predicted flux in CaII lines is less than observedone, but this discrepancy can be resolved if not only high-density but alsolower density gas falls onto the star. Theoretical equivalent widths as well asrelative intensities of He\,I subordinate lines disagree significantly withobservations, presumbly due to a number of reasons: necessity to take intoaccount non-LTE thermal structure of upper layers of a hot spot, poorly knowncollisional atomic data for HeI upper levels and inhomogeneity of the hot spot.

A non-LTE modeling of narrow emission components of He and Ca lines in optical spectra of CTTS