Light curves of supernova iPTF13z in the R band from the P48 telescope and in SDSS g, r, i, and Johnson B bands from the P60 telescope. The B, g, and i magnitudes have been offset for clarity, as indicated in the legend. The apparent magnitudes are shown without correction for extinction. Times for conjunction of iPTF13z with the Sun are marked with ⊙ symbols. The rate of the ⁵⁶Co→ ⁵⁶Fe decay has been drawn for comparison. The black ticks at the bottom indicate epochs of spectroscopy. The S stands for the 0.26 mag correction of the P48 photometry onto the SDSS system. The absolute magnitude M_r is given for the r band and takes MW extinction into account.