Oh, these are some estimated fees for different time periods and priorities. The "fastestFee" refers to the estimated fee for a transaction that needs to be confirmed as soon as possible, while the "hourFee" refers to the estimated fee for a transaction that is less time-sensitive. The "minimumFee" refers to the lowest possible fee that can be paid for a transaction to be included in the next block. Keep in mind that these fees are only estimates and can change depending on various factors.