I am attempting to extract the data points from the graph below:

enter image description here

-axis titles and axis lines are removed for digitising simplicity-

I have tried using a range of graph digtisers (i.e. datathief, getdata, dcsdigitiser) but none of them are able to capture the data effectively without manual data points.

Is there a technique that accounts for solid, dashed and dotted lines and is able to distinguish from lines that are close together?

Using getdata, I managed to get this result:

enter image description here

However, there are not an equal number of points per line so data processing is difficult to account for this issue.


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