Photo-z uncertainties, ﹩{\sigma }_{{\rm{\Delta }}z/(1+z)}﹩, as a function of redshift for our sample galaxies. Red line shows the median photo-z uncertainties. We see that the median ﹩{\sigma }_{{\rm{\Delta }}z/(1+z)}﹩ ≲ 0.01 out to z ∼ 1.2, small enough for reliable construction of the density field and the cosmic web in this work to ﹩z\sim 1.2﹩.