DFRobot C1001 use of sSleepStatistics DFRobot_HumanDetection::c(void)

I am building and application as part of my commercial systems for a possibly large application in Aged care and in home care in several countries.      [yes, required approvals and testing] 

and testing the C1001 in Sleep mode, that is generally OK reading the sleep mode, inornotinbed, heartrate / respiration etc, all reasonably ok, I added the normal range control etc

I will also do the Fall detect method, looks relatively simple. 

  , however I need to receive the hu.getSleepStatistics();

In the example code there is the following comment..

 sSleepStatistics statistics = hu.getSleepStatistics();  // Get sleep statistics, the sensor reports the whole night's sleep statistics data when it judges the sleep process to be over.

when can I expect that? or can I call it after we are “awake” or “not present?” inotnotinbed etc?

 I am writing the data to the cloud data service, also what are the range of values I expect to see for these items ?

Also in the sSleepComposite DFRobot_HumanDetection::getSleepComposite(void)

what will I expect in the .apneaEvents = 0, ?  appears I received an apnea evet of some 132? 

as I need to read that as an event and I can log the time and result .. is that simply 0 - 1 ? not just the stats 

appreciate some assistance,, thanks Terence..