Variation of the FIRC at 150 MHz with redshift for the redshift sample. The black points are direct detections in the radio and the blue points are undetected in the radio and are therefore lower limits in q. The orange points are the median q_TIR measured using survival analysis in each redshift bin and the orange line is the power law fit to those points. The red line is the fit from Calistro Rivera et al. (2017) and the green line is the fit from Delhaize et al. (2017) converted to 150 MHz with a spectral index of −0.78.