what are all the transmitter names?
allenheads, alston, bellingham, blaydon burn, byrness, catton beacon, durham, esh, felling, fenham, haltwhistle, haydon bridge, hedleyhope, humshaugh, ireshopeburn, kielder, morpeth, newton, seaham, shotleyfield, staithes, sunderland, wall, weardale, whitaside
what is the bbcb number for each of them?
21, 45, 21, 47, 21, 46, 47, 45, 43, 21+, 55, 41, 47, 45, 59, 23, 28, 23, 47, 28, 51, 51, 51, 41, 41
and which of them has a bbcb of over 55?
ireshopeburn