Figure 4.

The standard deviations, σGP, of 30 different measurements of the electrostatic binding free energy, ΔΔG_el, on randomly-shifted grids at finest grid spacings of 0.3 Å, 0.4 Å, and 0.5 Å, as described in Methods. a. The solvent-excluded surface. b. The van der Waal's surface. No figure was made for the Gaussian surface because σ_GP was too small to represent on this scale, as can be seen from Table 1.