Does the Samsung Smartwatch Galaxy 6's PPG sensor take measurements th

I have been looking at information on other smartwatches and there are some that only give HRV etc values at night.
I would like to know if the PPG sensor is in operation throughout the day and would like to confirm that it has a sampling rate of 25 Hz.

Hello,
HRV and PPG data are only available with Samsung Health Sensor SDK.
You need partnership to access this one on Galaxy watches.

For Samsung Health SDK related queries, please report to the Developer Support to connect with the team officially.

Samsung Developer

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Thanks
Shamima
Samsung Developer Program team