--- service: j.root-servers.net start-period: '2016-04-15T00:00:00Z' end-period: '2016-04-15T23:59:59Z' metric: rcode-volume 0: 2341145066 1: 488193 2: 318 3: 3657354381 4: 20203 5: 2131577 6: 190 7: 6838 8: 1292 9: 270 10: 286 11: 17636 12: 301 13: 3208 14: 234 15: 218 16: 22