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Sleep timeline June 24 changed the next day (and sleep stage values seem incorrect from then on)

Hello, on June 24, the Sleep Timeline on my Fitbit app showed a low value for Deep Sleep. Surprisingly, on June 25, the Sleep Timeline Deep Sleep for June 24 was changed to 1h 32m (and the corresponding graph also changed). In fact, the Deep Sleep in the Timeline for June 25 was uncharacteristically high (2h 14m). I have lost confidence in the sleep data since June 24.

On June 25, I found the sleep.json file, which contains the data for June 24: It sill shows the >original< June 24 data for Deep Sleep. However, the UserSleepStages csv file shows the >new< June 24 data (1h 32m) for Deep Sleep. 

On June 27, I called the 1-800 number and was directed to change the Sleep Tracking to Sensitive; however, the UserSleepStages CSV data for Jun 28 still is different from the Sleep JSON data. It looks like the two files are using different algorithms to determine the sleep stages.

Also, as mentioned below, starting on June 24, the overal score in the sleep_score.csv file in the exported data also diverges from the Sleep score in the Fitbit app; prior to that their values are identical.

Please help!

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I’m also having problems with sleep analysis and have noticed huge inconsistencies between the main “today” summary page and the actual sleep stage breakdown graph. I too am losing confidence in this device for sleep analysis, which is a shame because that’s the whole reason I purchased it. I hope they get to the bottom of this soon 😕

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The overal score in the sleep_score.csv file in the exported data also diverges from the Sleep score in the Fitbit app since June 24. I mean, before June 24, the values of these variables/parameteres are identical. Can anyone from the Google Fitbit software staff shed some light on this?

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 I have had the same experience.  I have lost the confidence in Fitbit to track sleep accurately.  Keep us posted if you find another device that is dependable.

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I have had the same experience.  I have lost the confidence in Fitbit to track sleep accurately.  Keep us posted if you find another device that is dependable.

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I would like developers to address this issue ... Why are there two different sets of data for Deep Sleep for each day?

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