No, it's the total creation for all node per day, i'm not stupid.
311040 BOS per day as you say, i'm just confirming.
Currently there is no way to know how much rewards one will receive running a node until mainnet is launched.
Based on wallet balances, the
https://bosradar.com reward calculator shows below rewards per day.
26.11 BOScoins in confirmation rewards
98.41 BOScoins in transaction rewards
40.39$ Per day earning