from: http://www.bom.gov.au/ntc/IDO70000/IDO70000_60370_SLD.shtml
Monthly sea levels for Fort Denison (Sydney) - 1914 to 2021
slope=(1.06+-0.06)mm/yr  (linear fit)
acc=(0.020+-0.004)mm/yr2

from Boretti, 2020
Fort Denison 1 and 2 (composite) 1897/1 - 2016/12
slope=(0.739+-0.101)mm/yr
acc=(0.01747+-0.00585)mm/yr2
Boretti's CV at https://faculty.pmu.edu.sa/pmufaculties/Details/aparker
----------------------------------
18.09.21