The average PROD value for all 100 functionals is rather high (0.32 Å 2 •°•cm -1 ), but this is distorted by the high value for HF-3c (2.477 Å 2 •°•cm -1 ). Instead, by taking the product of the averages for each of the four properties (Table ), one obtains a PROD value of only 0.025 Å 2 •°•cm -1 , which is a more appropriate overall measure.