GLM radiated energy estimate and USG reported energy for selected fireballs in the spectral range from 380 nm to 850 nm. Gray points are computed assuming the blackbody spectrum. Colored points are computed assuming OI − 1 radiation with correction on velocity. (a) GLM and USG comparison of observations of same fireballs. Fireballs observed simultaneously with GLM-16 and GLM-17 are connected with the green line. (b) Residuals (J, log₁₀ scale) from the GLM−USG matching curve.