[gtld-tech] Definition of "% of DNS Service Availability" used in Registrant Survey

Hello, I was reading the recent ICANN Releases Phase One Registrant Survey on the Domain Name Landscape and saw mention in the metrics section a "% of DNS Service Availability." I was wondering if there was a definition for this measurement available? Possibly some details about how data is collected where it is collected from? ... etc Please let me know if you have any questions, Thank you for your time, CBaker Reference: "% of DNS Service Availability ( Present SLA is 100% )" Category - Trust in http://newgtlds.icann.org/en/reviews/cct/iag-metrics-final-recs-26sep14-en.p...