--- service: j.root-servers.net start-period: '2014-05-31T00:00:00Z' end-period: '2014-05-31T23:59:59Z' metric: rcode-volume 0: 2112604683 1: 977478 2: 3814 3: 1601409539 4: 10696 5: 2485008 6: 1749606 7: 867 8: 582 9: 6178 10: 3501 11: 813 12: 554 13: 577 14: 1832631 15: 581 16: 1