The intergalactic Newtonian gravitational field and the shell theorem

The release of the 2MASS Redshift Survey (2MRS), with it's 44599 galaxies allows the deduction of the galaxy's masses in nearly complete sample. A cubic box with side of 37 Mpc containing 2429 galaxies is extracted and the Newtonian gravitational field is evaluated both at the center of the box as well in 101 x 101 x 101 grid points of the box. The obtained results are then discussed at the light of the shell theorem which states that at the internal of a sphere the gravitational field is zero.