Node-time
The node-time is the total amount of time that your nodes are running in a given month. For example, if you have 1 node running the entire month, then the compute time would be 730 hours (365 days * 24 hours per day divided by 12 months). If you have 10 nodes running all the time, then the node-time would be 730 * 10 = 7300 hours.