Investigating the accuracy/precision of the (the proposed weighting factor of Eq. (6) (S_r–N_c) for the gas phase) for fitting on six employed literature datasets, namely (a) Dataset 2, (b) Dataset 3, (c) Dataset 4, (d) Dataset 5, (e) Dataset 6, and (f) Dataset 7. It should be noted that Dataset 1 was excluded from the analysis because it was not reported for this purpose.