H₂O and CH₄ spectral indices defined by Burgasser et al. (2006) for the classification of T dwarfs calculated in the spectra available for SCR 1845 B. For comparison, the grey dots represent the spectral index values for T dwarfs from the SpecX library, and the black dots the values for the reference objects from Burgasser et al. (2006, Table 4) with available SpecX spectrum. The spectral coverage of the Kasper et al. (2007) spectrum does not allow us to measure the CH₄-J index. The values of all the spectral indices are summarized in Table 4.