Strange Data visualization after 8 days

I’ve two pressure sensors put into one grafana based panel

when I enlarge the visualisation time from 8d to 9d or longer, one curve gets wrong

the queries are the same except a math calculation because one sensor reports in pascal, the other in hPa.

any idea why that happens and how to correct it?
thanks

It’s not wrong. It’s just changing the scale to show the extremely low data point on the 9th of August (~480hPa).

If that data point is an error you can remove it using the influxdb console:

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thanks for your explanation.
I was unable to execute an adequate query