Error analysis of fruit diameter and length simulation in the spring and autumn of 2011, 2012, and 2013.

^t and ^u: Regression coefficient determined by simple linear regression Y = a+bX, where estimated values = X, measured values = Y;

^v: coefficient of determination;

^w: Willmott agreement index;

^x: Mean absolute error;

^y: Mean bias error;

^Z: Root mean square error.

Error analysis of fruit diameter and length simulation in the spring and autumn of 2011, 2012, and 2013.