(1) What is the average (a) salary or (b) wage for each occupational category in each of the national departments; (2) what (a) is the minimum (i) salary or (ii) wage in each of the national departments and (b) occupational category receives the specified remuneration; (3) what (a) is the maximum (i) salary or (ii) wage in each of the national departments and (b) occupational category receives the specified remuneration?