Averaged spectra of and lines toward the Orion Bar on the main-beam brightness temperature scale, not corrected for the beam coupling factor. The gray areas represent the velocity integration range. The blue dash-dotted line and red dashed line are the expected velocity components from Orion Ridge (9.0 km s⁻¹) and Orion Bar (10.6 km s⁻¹). lines were multiplied by a factor of 5.