The column for 'max Zs' should surely contain the limiting value being worked to, as a reference for the column containing the actual reading obtained. If the conductors are at full load working temperature, the table values would apply. If at ambient, then you are referred to appendix 14, for methods of correction of the maz Zs value.
The 80% factor is applied NOT to the table value, but to the calculated value of V0 / Ia which is the fault current which causes a trip within the requisite time. Funnily enough, for a 32A Type B breaker, the above calc at 230V, 160A is 1.15 ohm, and 0.8 x the table value of 1.44 is also 1.15 ohm ( 1.152).
Does that work for all of the tables and values?
Anyway, I still think the 'max' column should contain the Actual limiting value being worked to.