The Switch node network is programmed to distribute rewards according to an algorithm that considers the points each node has earned. Points are earned through the Proof of Action protocol. The more actions you take, the more points you earn, and the more rewards your nodes will earn. The distribution algorithm also considers how many nodes are running each day, which means the same number of points can earn you a different number of rewards on different days.
For more information about Proof of Action and reward distribution please see our Lite Papers.