&Solar Physics BUkrainian Ksolar granulation// We investigated the temperature structure of a real solar granulation. Parameters of the inhomogeneous atmosphere are derived by means of the inverse NLTE problem solution of radiation transfer using modified response functions and implementing Tikhonov' s stabilizers, which enables one to obtain smooth solution and reduce considerably its sensitivity to initial guesses. Temperature profiles along two spatial coordinates are obtained. We also investigated temperature fluctuations at different depths of the photosphere and pecularities of a real solar convection, namely a superadiabatic layer and an overshooting convection region. Using our temperature distribution, we localized fluctuations generating oscillatory motions and estimated the velocity of horizontal flows.