What does p mean in F1?

Excuse me, I'm a bit confused about the terminology used in the world of finance and cryptocurrency. Could you please clarify for me what the letter "p" stands for in the context of "F1"? Is it a specific metric, an abbreviation for a certain process, or perhaps it's related to the performance of a particular cryptocurrency or financial instrument? I'd appreciate any insight you can provide to help me better understand this term.