>>Coriander I've never had an issue with.
>Same plant, different parts, differing aldehyde concentrations.
Cilantro leaves are known as coriander leaves in many parts of the world.
Not the same as coriander seeds, same plant though
That red line indicates that someone has been cherry picking the data to get the result they want or they are incompetent at gathering data to get an outlier result like that.