Monthly statistics are only included if there are more than 10 years of data. The number of years (provided in the 2nd last column of the table) may differ between elements if the observing program at the site changed. More detailed data for individual sites can be obtained by contacting the Bureau. This page URL: http://www.bom.gov.au/climate/averages/tables/cw_005007.shtml.
piffle (third-person singular simple present piffles, present participle piffling, simple past and past participle piffled) To act or speak in a futile, ineffective, or nonsensical manner. To waste, to fritter away.
A turnstile, also called a baffle gate or turnstyle, is a form of gate which allows one person to pass at a time. It can also be made so as to enforce one-way traffic of people, and in addition, it can restrict passage only to people who insert a coin, a ticket, a pass, or similar.