== nz == :Summary: Contains target densities as a function of redshift and possibly other parameters. :Naming Convention: ``nz_{target}.dat``, where ``{target}`` is, *e.g.*, ``qso``, ``elg``, ``lrg``, etc. :Regex: ``(nzr?|dNdzdg)_[A-Za-z_]+\.dat`` :File Type: ASCII Contents ======== These ASCII files contain data in 2 to 3 columns. The first column is the redshift bin, the second column, if present, is a magnitude bin (*g* or *r*), the third column is the target density in the bin defined by the other column(s).