I had a rougher version of this panel before but hadn't yet included in Nodeyez as it was pretty raw.

When making a Bitcoin transaction, people balance the fee rate they will pay (preferring lowest) with the time they want the payment to go through (preferring soonest). Up until a few years ago people often used really poor services that tended to overestimate fees. Mempool.space has been a game changer and is really accurate in its estimates. But not everyone can run a local instance due to resource constraints.

The Nodeyez panel relies solely on the Bitcoin Core estimates and shows bands of fee rates for block inclusion targets and their respective sats per virtual byte cost. Y axis is the fee rate, and X axis is time from left to right. Vertical lines mark when blocks were found, with block numbers annotated at the bottom for context.

It just gives a local/sovereign alternative to running a local mempool.space service or trusting the publically available instance.