Results for precision of fits and selected direct comparisons with the training data set are given for the fragmented and many-body approaches. For both approaches computations were performed on a single node of a Linux cluster using a Xeon Gold 6250 processor with 128 GB of memory. The dgelss subroutine for linear regression in the Intel MKL library was used to obtain the expansion coefficients for the both the many-body PES (MB-PES)