Partial least squares regression models: basic statistics of the models and regression coefficients of x variables for the best model for intensity of herbaceous and fruity aroma (y variable) for 2008 and 2009 wines. Partial least squares regression models: basic statistics of the models and regression coefficients of x variables for the best model for intensity of herbaceous and fruity aroma (y variable) for 2008 and 2009 wines. Justin J. Scheiner et al. Am. J. Enol. Vitic. 2012;63:94-105 © 2012 by the American Society for Enology and Viticulture