--- service: j.root-servers.net start-period: '2015-10-21T00:00:00Z' end-period: '2015-10-21T23:59:59Z' metric: rcode-volume 0: 1877848598 1: 536385 2: 780 3: 2419945626 4: 23532 5: 966697 6: 221 7: 232 8: 286 9: 557 10: 2594 11: 3740877 12: 308 13: 429 14: 1239 15: 479 16: 4