Observational Properties of Type II Plateau Supernovae

We present spectroscopic and photometric data of a sample of Type II plateau Supernovae, covering a wide range of properties, from the ${}^{56}$Ni rich, high luminosity events (e.g. SN 1992am) to the low-luminosity, ${}^{56}$Ni poor SNe (e.g. SN 1997D). We provide an observational framework to analyze correlations among observational data, physical parameters and progenitors characteristics of Type II Supernovae.