This spreadsheet looks excellent, I've used my own much simpler version for some time. It does seem to me that insurance companies need to know even more details of your flying times by: cross country, aircraft type, tailwheel time etc.. and as someone has said already times in the last 90, 28, 5 days for AAIB reports.
My only trouble is I started flying 30+ years ago, long before spreadsheets, and would dearly love to put all the contents of the numerous logbooks into it, including the names of the people I have flown with for nostalgic reasons. But couldn't face all that typing!