eigenvalue ratio of 3rd direction WHIM size descriptor and sum of directional WHIM size descriptors using eigenvalue of the covariance matrix of the molecule atomic coordinates
1st eigenvalue of the covariance matrix weighted by mass of the molecule atomic coordinates, which account for the molecular size
mean information content on the symmetry along 1st principal component using the covariance matrix of the molecule atomic coordinates
mean information content on the symmetry along 2nd principal component using the covariance matrix of the molecule atomic coordinates
mean information content on the symmetry along 3rd principal component using the covariance matrix of the molecule atomic coordinates
The inverse of the kurtosis calculated by the fourth order moment of 1st principal component using the covariance matrix of the molecule atomic coordinates
Average value of positive electrostatic potential at the VDW surface
Variance of positive electrostatic potential on the solvent accessible surface
Average value of negative electrostatic potential at the VDW surface
Variance of negative electrostatic potential on the solvent accessible surface