> ## Documentation Index
> Fetch the complete documentation index at: https://docs.junction.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Historical Data Pull Range

> Customize how much historical data Junction fetches when a new provider is connected using Team Data Pull Preferences per provider.

Junction fetches the historical data immediately when the connection is established. The pull range
can be estimated by `[now - days_to_pull, now]`.

| Provider                                                                     | Default  | Configurable | Remarks                                                                                                                                                                                                                       |
| ---------------------------------------------------------------------------- | -------- | ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Abbott LibreView](https://www.libreview.com)                                | 90 days  | ❌            | -                                                                                                                                                                                                                             |
| [Fitbit](https://www.fitbit.com/global/uk/home)                              | 90 days  | ⚠️           | Activity and heartrate timeseries data are fixed to 14 days.                                                                                                                                                                  |
| [Garmin](https://www.garmin.com)                                             | 90 days  | ✅            | -                                                                                                                                                                                                                             |
| [Google Fit](https://www.google.com/fit/)                                    | 90 days  | ✅            | -                                                                                                                                                                                                                             |
| [Oura](https://ouraring.com)                                                 | 180 days | ✅            | -                                                                                                                                                                                                                             |
| [Peloton](https://www.onepeloton.com)                                        | 180 days | ✅            | -                                                                                                                                                                                                                             |
| [Strava](https://www.strava.com)                                             | 14 days  | ✅            | -                                                                                                                                                                                                                             |
| [Wahoo](https://wahoofitness.com)                                            | 180 days | ✅            | -                                                                                                                                                                                                                             |
| [WHOOP](https://www.whoop.com)                                               | 180 days | ✅            | -                                                                                                                                                                                                                             |
| [Zwift](https://zwift.com)                                                   | 270 days | ✅            | -                                                                                                                                                                                                                             |
| [Withings](https://www.withings.com)                                         | 90 days  | ✅            | -                                                                                                                                                                                                                             |
| [8Sleep](https://www.eightsleep.com)                                         | 90 days  | ✅            | -                                                                                                                                                                                                                             |
| [Apple HealthKit](https://www.apple.com/uk/ios/health/) (SDK)                | 30 days  | ✅            | -                                                                                                                                                                                                                             |
| [Android Health Connect](https://developer.android.com/health-connect) (SDK) | 30 days  | ❌            | Google restricts access to historical data to [30 days before the first successful permission request](https://developer.android.com/health-and-fitness/guides/health-connect/develop/frequently-asked-questions#time-range). |
| [Hammerhead](https://www.hammerhead.io)                                      | 30 days  | ✅            | -                                                                                                                                                                                                                             |
| [Dexcom](https://www.dexcom.com)                                             | 30 days  | ✅            | -                                                                                                                                                                                                                             |
| [Dexcom (G6 And Older)](https://www.dexcom.com)                              | 1 day    | ❌            | -                                                                                                                                                                                                                             |
| [MyFitnessPal](https://www.myfitnesspal.com)                                 | 14 days  | ✅            | -                                                                                                                                                                                                                             |
| [Polar](https://www.polar.com/accesslink-api/#polar-accesslink-api)          | 28 days  | ❌            | Polar only supports historical backfill for Sleep and Sleep Stream resources.                                                                                                                                                 |
| [Cronometer](https://www.cronometer.com)                                     | 28 days  | ✅            | -                                                                                                                                                                                                                             |

<Note>
  The configurable maximum is 365 days at this time.
</Note>

### Customizing historical data pull range

<Info>
  Org Management API is available for [the Scale plan](https://tryvital.io/pricing).
</Info>

You can configure the historical pull range using the [Team Data Pull Preferences](/api-reference/org-management/team-data-pull-preferences/upsert-team-data-pull-preferences)
feature of the Org Management API.

You can specify a number of days to backfill that uniformly applies to all resources of a provider, as well as overriding the number of days to backfill for specific resources.

<Info>
  The Team Data Pull Preferences you specified are *advisory*. There are scenarios in which Junction systems
  may not adhere strictly to your stated preferences.
</Info>