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Fig. 4


Panel A: Low-resolution spectrum recorded using a meteor spectral camera; panel B: High-resolution spectrum measured using the Echelle high-resolution spectrograph. Spectra shown in black and grey belong to laser-induced breakdown in the air; those in red belong to electric discharge. The most prominent atomic species (black letters in panel A) and molecular bands (N2 and N+ 2) are assigned in panels A and B, respectively.

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