This indicator is trying to predict potential LUNA token bottom.
How does this work?
There is UST baked by LUNA and in case LUNA drops so hard that MC of LUNA is lower than MC of UST we are at risk of repeg and kinda "breaking" of Terra Blockchain.
This indicator doesn't take into account other stable assets but UST but they don't take a big portion of total stable tokens capitalization so it can be omitted.
Heavy buy pressure is expected at indicated levels.