Location of tide gauge records analysed for this study. Sites are delineated with a station “ID,” commencing with 1 (Darwin, Northern Territory) and moving anticlockwise to 58 (Wyndham, Western Australia). Full details of data records are summarized in Table 1. Base plan was generated using “ggmap” package (Kahle and Wickham, 2013) in R (R Core Team, 2019).