What is T1, T2, and T3?

Excuse me, could you please clarify for me what T1, T2, and T3 represent in the context of cryptocurrency and finance? I'm a bit confused as these terms seem to be specific to the industry and I'm not entirely familiar with their meanings. Are they perhaps related to transaction tiers, technical analysis levels, or some other aspect of the market? I'd greatly appreciate it if you could provide a concise explanation.