I’m actually running consolewd on a Raspberry which, as far as I can see, has no provision for resetting the all time barometer data. It looks like Steel Gauges is maintaining the max/min internally on the web server. As a test I tried copying all clientraw and customclientraw files to the active folder from a backup that was made before the problem and that didn’t fix the barometer display, so I don’t think the max/min values are coming from consolewd. The problem has remained for several days now, so it doesn’t look like it will reset automatically overnight.