Ternary diagram displaying the spectral classification of 202 meteors of − 1 to − 14 mag (corresponding to meteoroids of mm to dm sizes) observed by the AMOS-Spec system during 2013–2017 (a) and (b) comparison to the spectral classification of +3 to −1 mag meteors (corresponding to meteoroid sizes of 1–10 mm) based on data from Borovička et al. (2005), including a curve showing the expected range for chondritic composition as a function of meteor speed (in km s⁻¹), as modeled by Borovička et al. (2005).