I did not say it was.. you are about to CONFUSE the guy unnecessarily... read my comment again.. and this time try to understand it before you confuse the issue.
statement 12 months. IO need to ensure 400k in account at all times for last 1 year, and 800k for 2 months before your renewal, and 800k for 3 months after your last renewal.
Coming here and asking will most likely give you another 8+ different seperate answers. Is there a particular answer you are hoping to see here, which would fully satisfy your queries?
As per previous advice, head down to Immigration and ask them... they do not bite!