Figure 12
Bond-length distributions of PO4 tetrahedra for Obr = (a) 0, (b) 1 and (c) 2, with sample sizes of 9256, 1640 and 3704 bonds, respectively. The bond-length constraints are shown. The colour scheme of Fig. 11 is preserved, although bonds of 1 v.u for Obr = 1 and 2 give slightly different observed mean bond lengths, given in red (Obr = 1) and orange (Obr = 2). |