I would say those are fairly low salaries, still waiting for other figures to come in to compare but at todays conversion rates they equate to sterling of....
TWR non RDR £1275/£1675
TWR RDR/APP £1475/£1890
ACC/AWY £1675/£2145
and salaries of
TWR non RDR £20115/£24810
ACC/AWY £36900/£46950
I assume the salaries are gross figures not net like your monthly figures... otherwise they do not add up!!