Differentiation between observational time data and publication time data in Linecharts

[hudaif747]

Description

to do

[Pawandeep-Kaur-Betz]

So for observation period instead of showing a point we should show a bar Start data X axis ----this is a horizontal bar------------------- end date X axis and publication date can be shown as only dot point which further can be connected by a line.. Does that make sense?

[hudaif747]

Reference range plots.
combine range charts with dots on temporal axis.
Might have to implement a custom plot in amcharts