--- service: a.root-servers.net start-period: '2014-07-12T00:00:00Z' end-period: '2014-07-12T23:59:59Z' metric: rcode-volume 0: 916605385 1: 339820 2: 1168 3: 974949919 4: 10960 5: 1003894 6: 1896 7: 801 8: 1355 9: 2363 10: 2518 11: 924 12: 5009 13: 537 14: 1130 15: 633 16: 8