--- service: a.root-servers.net start-period: '2016-06-23T00:00:00Z' end-period: '2016-06-23T23:59:59Z' metric: rcode-volume 0: 1756685015 1: 1889985 2: 8115 3: 2893791616 4: 1087487 5: 1064896 6: 14211 7: 14347 8: 9421 9: 3137 10: 2892 11: 4536 12: 6676 13: 3579 14: 9032 15: 10205 16: 16