:  Snapshots

This table stores some housekeeping information of the milli-Millennium simulation. In particular, it links redshifts and lookback times to the integer index of the snapshot. Almost all other tables in the millimil database have a snapnum column that corresponds to the one in this table.

snapnuminteger The order of the snapshot, from 0 to 63 (z=0)
zdoubleThe redshift in full precision
redshiftrealThe redshift rounded to two decimal places.
lookBackTimefloat109 yearsThe lookback time corresponding to the snapshot