Mempool summary: fee rate ranges are wrong

[pabpas]

Describe the bug

Fee rates ranges in the mempool summary can't be right. In the Fee Rate Distribution section the average fee rate is higher than the fee rate range:

Fee Rate	Avg Fee Rate(sat/vB)
[3 - 4)	13.92
[2 - 3)	9.22
[1 - 2)	5.30
[0 - 1)	1.26

This also affects Estimate Block Depth calculation.

Environment (please complete the following information):

• Bitcoin Core /Satoshi:25.0.0/
• NodeJS v18.15.0
• Firefox
• btc-rpc-explorer 3.4.0
• Installation Method: npm

Additional context

https://bitcoinexplorer.org/mempool-summary

[Thierry61]

If you divide Avg Fee Rate by 4 then the result lies within the fee rate range. I suppose this is related to the size vs weight definitions, possibly the buckets limits are expressed in sats/vB and the avg fee rates in sats/B (or the reverse, I confess this is unclear in my head).

I agree there is a problem because:

• the 2 columns (FEE RATE and AVG FEE RATE) don’t have consistent units
• the unit is not mentioned in FEE RATE column
• the unit may be incorrect in AVG FEE RATE column

The solution could be to divide values in AVG FEE RATE column by 4 and add sat/vB unit in FEE RATE column. That way everything would be expressed in sat/vB. What do you think ?

[pabpas]

The solution could be to divide values in AVG FEE RATE column by 4 and add sat/vB unit in FEE RATE column. That way everything would be expressed in sat/vB. What do you think ?

Having everything consistent and with commonly used units (sats/vB) sounds like a solution 👍 But I think it is FEE RATE that needs correction, AVG FEE RATES already shows the right sats/vB values. Also, the chart "Fee Rate Distribution" shows in the X axis the units for fee rate (sats/vB), and that seems to be definitely wrong.

[pjw65]

Seems to be same as #416