Annual Percentage Return (APR) is the percent return of rewards for the last epoch that the validator was last elected.
Latest expected return is the validator's APR for the latest epoch.
The Expected Return field here is average of the validator's APR for the past 30 epochs that they were elected.
Validator uptime is calculated as:
Where s is the number of blocks signed by the validator and b is the number of blocks in the epoch so far.
If a validator has never been elected, their uptime will display as None in the tracking spreadsheet. In the staking dashboard, their uptime will be 0.00%.
There are five types of data in this field:
eligible to be elected next epoch
not eligible to be elected next epoch
Epos status is based on the validator's active status. The validator's active status will be controlled either by user or system (if detected low uptime or 0 self-stake). However if the validator is never elected, as long as he set the validator status as active, he will always be shown as "eligible to be elected next epoch".
There are five types of the data in this field:
NotBooted: if the validator was never selected/signed blocks.
None: when the validator is currently elected