Oscar Oximeter information

[Pogo007]

Hi

I use a Viatom PO2 ring and I import the data it collects into OSCAR.  One of the statistics that gets reported under Oximeter Information are the SpO2 desaturations.  An example of a reading I've had is SpO2 Desaturations: 14 (0.88%) 2.09/h

Can someone tell me how to interpret such a reading? 

Thanks