Based on data from the Permanent Service for Mean Sea Level (PSMSL), the relative sea level trend at Fort Denison is approximately 0.8 millimeters per year, with a 95% confidence interval of ±0.1 mm/year, calculated from monthly mean sea level data spanning 1886 to 2022. This equates to a rise of about 0.26 feet (approximately 8 centimeters) over a century .
So, 0.8 mm/year, but you've got 3.2 mm/year. Four times greater. Something is wrong.
