A
SOT depends on...
- weather conditions
- climate you live
- apps you run on your phone
- display settings
- mobile network coverage
- age of your battery
- ...
and the list goes on, so there is no real SOT to be considered "true" here for custom ROMs, the only one you might take for comparison are the SOTs of phone reviews, cause they usually tend to run the same setups on every new phone they review.