It's not been a year to bottom pick TLT. In fact, it's rarely a good idea to bottom pick. However, when a durable S/R Level holds and ideally is re-tested, it creates a situation where buying a low makes sense. And with ones stops very clear, i.e. below 92.30 (GREEN), it's an asymmetric pay-off.
A similar level is seen in 10-Year Notes.