The peak electron density of the 135.6 nm nightglow radiation data by COSMIC tiny ionospheric photometer measurement is retrieved. The peak electron density values from the tiny ionospheric photometer and the ionosonde observation are compared. The results show that the 135.6 nm nightglow radiative intensity values must be revised to suppress the influences of the 130.4 nm band and the near ultraviolet upto visible wavelength radiation. The retrieval results from the revised data have good consistency.
