$t_{\frac{1}{2}, a p h e i l i o n} - t_{\frac{1}{2}, p e r i h e i l i o n}$	The metric scale factor dimensionless parameter w	Dominating Era
50.196 hours	3.4091⁻⁴	Matter
3.08 min	1/3	Radiation
−61.6 sec	−1.00	Dark Energy