Ethane vs. NGLs vs. Condensates

[Socks22]

I'm trying to classify wet gas constituents based on the number of carbon atoms in each molecule. There seems to be a lot of discrepancy in the online community regarding definitions of NGLs and Condensates. Some materials consider ethane an NGL despite its gaseous state at stp. Other references consider condensates a sub-group of NGLs. Is there a clear distinction between NGLs and condensates and is ethane considered an NGL?

 

[zdas04]

Condensate is liquid at STP. NGL is gaseous at STP. Normal butane boils at 31F, it is NGL. Iso-pentane boils at 82F, it is Condensate. Ethane boils at -127F, clearly not going to condense at normal atmospheric conditions.

I have 3 different resources that draw the line where I drew it. I have 3 other resources that make it more complex (each different). There doesn't seem to be a universally agreed upon definition. I've never gone far wrong with my definition.

David