The mean hydration of carbohydrates as studied by normalized 2-D radial pair distributions, Claus A. Andersson and Sø ren B. Engelsen, Journal of Molecular Graphics and Modeling.The routine takes as input the location of the centerpoint of the two spheres and the two said spheres radii and calculates the rotational common volume used for normalizing the density maps of the atoms under investigation.-The mean hydration of carbohydrates as studied by normalized 2-D radial pair distributions, Claus A. Andersson and Sø ren B. Engelsen, Journal of Molecular Graphics and Modeling.The routine takes as input the location of the centerpoint of the two spheres and the two said spheres　radii and calculates the rotational common volume used for normalizing the density maps of the atoms under investigation.