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| Remaining energy (RE) | Energy level |
|---|---|
| If a node has RE greater than 75%. | High |
| If a node has RE greater than (or equal to) 50% and less than 75% | Good |
| If a node has RE greater than (or equal to) 25% and less than 50% | Average |
| If a node has RE less than 25% | Low |
