--- service: j.root-servers.net start-period: '2016-04-02T00:00:00Z' end-period: '2016-04-02T23:59:59Z' metric: rcode-volume 0: 2230310026 1: 378342 2: 453 3: 3544818574 4: 18319 5: 2072986 6: 3312 7: 69 8: 103 9: 482 10: 163 11: 15112 12: 151 13: 204 14: 153 15: 263 16: 11