Comparison of the [CII] PS for [CII] observations in the redshift range z_[CII] = 4.1 − 4.8. The squares denote the combined CO+[CII] PS after masking CO bright voxels, resulting in a 7% reduction in survey volume. The associated error bars on the squares capture the uncertainty in [CII] measurements due to white instrumental noise and sample variance. The blue crosses depict the intrinsic [CII] PS results, binned at the same Δk. The continuous line represents the intrinsic [CII] PS results but with a finer binning.