The asymmetric unit of X-ray intensity data of the seven crystal systems

A crystal structure can be determined from the X-ray intensity data of one asymmetric unit. As the function l(hkl) of the X-ray intensity has a center of symmetry if it is assumed that anomalous scattering is negligible, l(hkl) has the symmetry of a centrosymmetric point group, i.e. a Laue group. The asymmetric units of the intensity data are derived here for all Laue groups.