4.4.2.8. Repeat the procedures defined in paragraphs 4.4.2.6. and 4.4.2.7.3. above, where paragraph 4.4.2.6. is optional, until the performance of five consecutive non monotonic measurements at the 0.5 TR/(Test Mass) constant input value has stabilized within a tolerance of minus 10 per cent of the maximum value. a0c0