OK, a bit more info for you all:
The spreadsheet has a row added at the bottom every 6 hours. It tracks the progress of our ship along its track and gets sent to our shore office staff. On each added row we put the date/time and the distance left to go. The various average speeds(overall, past 24hrs, past 6 hours), and arrival times (ETA’s) etc are all calculated automatically and shown in various cells at the top of the sheet.
So, I want the calculation of the Speeds and ETA’s to be based on the final (bottom) row, which contains the Distance To Go (DTG). I do have it working fine by using the MIN([range]) function on the column containing the DTG. Which is OK as long as we keep making progress and the DTG decreases. If we hove to/stop/divert due to weather, and the distance to go increases then things get screwy, as the MIN function will return to lowest value in the column, and that’s not always the true DTG.
This is a new document to replace a terrible one. I want it all to be as idiot proof as possible as I do work with a few. And there’s more of them ashore.