Frequency spectra, light curves, and amplitude ratios for the newly discovered SPB variable SBL210. Notations and markings are the same as in Fig. A.3. The amplitude ratios were calculated for masses between 4.5 and 5.5M_⊙. The detected frequencies are f₁ = 0.9615d^-1, f₂ = 0.8332d^-1, f₃ = 0.5004d^-1, and 2f₁. The errors in the frequencies range from σ_f1 = 0.00005d^-1 to σ_f3 = 0.0006d^-1.