Between 15 March and 25 March the AUD/USD has traded between 62c and 57.5c (ignoring a very small intraday move below this which lasted less than 12 hours). That gives a range of OMN $AUD Cash of between $1.111 and $1.198.
The average of the currency was around $0.59 which would be OMN cash of $1.167.
Hopefully its somewhere close to this!!!