Actual is the average fee paid per transaction in recent blocks. Forecast is the low-priority fee for a standard transaction over the next 10 blocks.
Calculated from the consensus emission curve at the current height. The base reward is (2^64 โ 1 โ emitted) shifted right by 19, with a floor of 0.6 XMR from block 2,639,513. Blocks that exceeded the median weight paid a smaller reward, so the coins actually issued are a little lower.