Select Parameters of the Standard Lambda-CDM Model
The following is either copied or adapted from Table 7 of Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results (last revised 2008/10/17), specifically, the WMAP five-year data combined with measurements from Type Ia supernova (SNe) and Baryon acoustic oscillations (BAO). Data for the composition of the universe at decoupling was taken from the WMAP Mission Results page. Note that only some of the parameters are listed; several were left out either because I didn't find them interesting, or (more likely) I don't actually understand what the hell they are, or what they represent.
Hubble constant: 70.5 +/- 1.3 km/s/Mpc (kilometers per second per megaparsec)
Age of the universe: 13.72 +/- 0.12 Gyr (billion years)
Observable universe: 46.314 +0.447/-0.457 billion light-years
Age at decoupling: 376,971 +3,162/-3,167 years
Size at decoupling: 475.9 +3.6/-3.9 million light-years
Distance to decoupling: 45.773 +0.450/-0.463 billion light-years
Age at reionization: 432 +90/-67 Myr (million years)
Total density: 1.0050 +0.0060/-0.0061
Equation of state: -0.992 +0.061/-0.062
Composition of the universe at decoupling:
Dark matter: 63%
Photons: 15%
Atoms: 12%
Neutrinos: 10%
Current composition of the universe:
Dark energy: 72.6% +/- 1.5%
Dark matter: 22.8% +/- 1.3%
Baryons: 4.56% +/- 0.15%
Neutrinos: <0.71% (95% confidence level)
Neutrino mass: <0.67 eV (95% confidence level)