Life cycle:
This wormhole has not yet begun its natural cycle - more then 24 hours - 'Fresh'.
This wormhole is beginning to decay - between 24 and 4 hours - 'Fresh'.
This wormhole is reaching the end - less than 4 hours - 'EOL'.
This wormhole is on the verge of dissipating into the ether - less than 15 minutes? - 'EOL'.

Mass:
Has not yet had its stability significantly disrupted - over 50% - 'Fresh'.
Has had its stability reduced, but not to a critical degree - between 50% and 10% - 'Shrink'.
Has had its stability critically disrupted ... and is on the verge of collapse - less than 10% - 'Crit'.