3.3.4.1 : Snapshots

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

column	type	features	description
snapnum	integer	NOT NULL	The order of the snapshot, from 0 to 63 (z=0)
z	double	NOT NULL	The redshift in full precision
redshift	decimal(5,2)	NOT NULL	The redshift to exactly two decimal places.
lookBackTime	float	NOT NULL	The lookback time in 109 years