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Fig. 9

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Band depth measured at 2.9 µm (BD2.9) for asteroids in the sharp 3 µm group (Takir & Emery 2012). The weighted average of each group is marked as a star with a 1σ error. All calculation results and references are tabulated in Table A.2. The detection rate of the 0.7 µm band was quoted from Fornasier et al. (2014). BD2.9 was not considered for T-types in the previous study.

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