[en] Time- and space-resolved emission spectroscopy was applied to study the N₂(C³Π_u→B³Π_g) and NO(A ²Σ⁺→X ²Π_r) emission induced by pulsed positive primary streamers in coaxial geometry generated in high-purity nitrogen. To the best of our knowledge, first complete vibrational distributions of the N₂(C ³Π_u) electronic state were obtained under pulsed positive streamer discharge conditions in high-pressure nitrogen. On the basis of kinetic modelling we have obtained quenching rate constants for v=1-4 vibrational levels of N₂(C³Π_u) state by N₂: k_Q(v=1)=(2.9±0.4)x10^-11cm³s^-1, k_Q(v=2)=(4.3±0.6)x10^-11cm³ s^-1, k_Q(v=3)=(4.8±0.8)x10^-11 cm³s^-1, kQ(v=4)=(4.9±0.9)x10^-11 cm³s^-1. (author)