This is a dataset we conceptually took over from icranet after their
demise.  In reality, we in the end were working from
https://academic.oup.com/mnras/article/475/3/3613/4733291
with data obtained from ftp://ftp.star.ucl.ac.uk/johnsyh/cs82/,

stilts tpipe in=data/cs82_phz.fits.gz cmd="select Z_BEST>2" out=sample.fits