I thought I would do a bit of D.D.(due diligence) on the last...

I thought I would do a bit of D.D.(due diligence) on the last announcement. For the month of August there were 2 intra-day peaks of $0.024. The 6/08/09 and 10/08/09. since then the peaks the intra-days have been below $0.023. Seeing the ASX notice was on the 18th of August 09 the "peaks were between $0.021 $0.023 5 days prior. How did they derive at $0.024?? Maybe they calculate things over in the west a bit different than here??