“Relative” mean sea level (trend), velocity, and acceleration for Port Pirie and Port Adelaide. The scales associated with each of the three panel charts for the respective tide gauge records are equivalent for direct comparison between records. “Relative” mean sea level (top panels) is based on revised local reference datum (PSMSL, 2019). The vertical dashed line in the top-left panel highlights the abrupt change in the mean sea-level trend at Port Pirie around the mid-1990s. See Figure 1 and Table 1 for station details.