problem with history tables in my eyes is lack of filtering

'blm history' is not a great metric unless you can drop events with power enrichment, or when not in closed loop, etc. more advanced tools can also filter out like TPS delta so transitional events disappear. it's also nice to add short term trim with long term trim and average that for better results,

the nice thing about excel analysis (and tools like my tablehack and trimalyzer which were designed to do the same thing but faster and with less skill) is you can feed them literally weeks of logs and filter out the data that doesn't matter, and get some really useful data

good engine analysis comes from averaging a ton of log data