Rewards are a function of the Helium Network blockchain protocol, subject to network governance, and depend on multiple factors, including your installation location, installation type, geographical location, as well as data from the associated Land type, Footfall and Urbanization Oracles, your own activities, network usage, technical and/or operational issues, and network governance. Nova Labs does not provide, guarantee, or refund any rewards and makes no promises, guarantees, or warranties as to their value.
A good starting point for learning about rewards calculations is the 5G On Helium article available directly from the Helium Foundation.
Additionally, it’s important to stay updated with current and future HIP proposals, as these do and can impact reward calculations.
You can find a full and up to date list of HIPs on the Helium Github repository.