Either it is not in the dataset or there has been an error.
Anomaly Map: << Oct 1992 >>
Altimetry and Tide Gauge Data Download
Data downloaded from this portal corresponds exactly to what is shown in the plot on this site.
Any changes you have made to the data (ex: de-seasoning, changing the time window, etc.) are included in the downloaded data.
If you would like to use the unaltered timeseries for the location selected, reset the settings back to their initial state.