highlight certain readings on graph

i have a graph of dates vs readings (line graph) and want to highlight certain readings of certain days on the graph how should i go about it ?

1 Reply

See the attached example.

I added a column to the source data with only the data points to be highlighted.

I added this column to the chart as a line series but with no lines and big markers.

I added data labels, but then deleted the labels for the original series, leaving only the labels for the highlighted data points.

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