What is the NGL yield?

Excuse me, as a cryptocurrency enthusiast and financial analyst, I've come across references to NGL yield in recent discussions, but I'm still a bit hazy on the specifics. Could you elaborate on what the NGL yield actually represents? Is it a metric related to a particular cryptocurrency, a yield farming strategy, or perhaps a financial instrument? I'm particularly interested in understanding how it's calculated, what factors influence it, and how investors can potentially benefit from tracking this metric. Any clarity you can provide would be greatly appreciated.