Same as in Fig. 8 but for O VIII/C VI over Ne X/C VI and for N_H = 0.20 × 10²² cm⁻². The neon abundance from Table 2 (WR) is increased by a factor of two. The horizontal shift of the bubbles from their original positions is indicated by the error in the upper left corner of the plot. The green square marks our “best-fit” bubble (see text). Filled triangles represent our iso-HB models, also shifted accordingly.