Rain totals changed since yesterday

I’m not sure why the rain totals change from one day to the next. First screenshot from yesterday, 2nd one from this morning. Can anyone explain this?

Is Rain Check enabled? It runs overnight, and adjusts your rainfall…

Ah, yes it is. What does it check against…other local rainfall data? Should I leave it on or off?

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Your preference. If you are having a lot of false rain events or your numbers are way off against a reference rain gauge, Rain Check will let you tap the “smart” in our smart weather stations to provide a better rain measurement. If in doubt, leave it on for a while…

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Thanks. I didn’t see that post…thx for the link. My station definitely needs some guide wires…it sways in strong wind so I’ll leave it on until I can firm up the mount.