Lattice constants and thermal expansion of H₂O and D₂O Ice Ih between 10 and 265 K. Addendum

In a previous paper we reported the lattice constants and thermal expansion of normal and deuterated ice Ih [Röttger et al. (1994). Acta Cryst. B 50, 644-648]. Synchrotron X-ray powder diffraction data were used to obtain the lattice constants and unit-cell volumes of H(2)O and D(2)O ice Ih in the temperature range 15-265 K. A polynomial expression was given for the unit-cell volumes. It turns out that the coefficients quoted have an insufficient number of digits to faithfully reproduce the volume cell data. Here we provide a table with more significant digits. Moreover, we also provide the coefficients of a polynomial fit to the previously published a and c lattice constants of normal and deuterated ice Ih for the same temperature range.