downstream noise

noise margin downstream: 26 db
output power upstream: 7 db 
attenuation downstream: 15 db
carrier load: number of bits per symbol(tone)
tone   0- 31: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
tone  32- 63: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
tone  64- 95: 00 00 00 13 34 53 55 46 56 35 65 55 45 45 55 54 
tone  96-127: 45 45 63 55 55 55 55 45 54 54 54 30 34 44 54 45 
tone 128-159: 55 45 54 54 34 53 34 55 53 33 24 33 33 54 34 33 
tone 160-191: 34 33 43 43 44 34 33 44 33 44 44 34 34 34 44 34 
tone 192-223: 33 34 33 44 44 44 44 44 44 43 44 44 44 24 43 43 
tone 224-255: 33 33 33 33 33 33 33 23 32 33 33 23 33 33 32 33 
tone 256-287: 44 44 44 44 44 43 44 43 33 32 33 23 33 23 33 33 
tone 288-319: 33 33 33 32 33 23 32 23 33 23 33 33 33 33 33 32 
tone 320-351: 33 32 33 32 33 23 33 23 33 33 33 23 33 33 23 33 
tone 352-383: 32 22 32 23 32 32 23 23 22 22 22 33 33 23 22 23 
tone 384-415: 22 23 23 32 33 23 23 32 32 22 22 11 00 00 11 22 
tone 416-447: 22 22 22 22 32 22 22 23 22 32 22 22 22 22 21 22 
tone 448-479: 22 22 22 22 22 22 22 21 21 11 11 11 11 11 11 11 
tone 480-511: 11 11 11 00 00 00 00 00 00 00 00 00 00 00 00 00