(3)  The selection of  Z_max

    Let  Z_v = 1, the results computed by using formulae outside the sphere are listed in Table 3. It can be seen from Table.3 that

Z_max = 5.0 - 8.0                 r_s=4.0 - 4.6

    For  H = 68  and  M = 1  we have  Z < 5.78,  therefore the QSOs of  Z > 5  may be observed. But Z > 8 is not observed in any way. If we cannot find Z=5.78 QSO, or Z > 5.78 QSO  is discovered, then the group of parameter adopted by me must to change.