We present a catalogue of 12.2-GHz methanol masers detected towards 6.7-GHz methanol masers observed in the unbiased Methanol Multibeam ( MMB ) survey in the longitude range 330 ^ { \circ } ( through 360 ^ { \circ } ) to 10 ^ { \circ } .
This is the first portion of the catalogue which , when complete , will encompass all of the MMB detections .
We report the detection of 184 12.2-GHz sources towards 400 6.7-GHz methanol maser targets , equating to a detection rate of 46 per cent .
Of the 184 12.2-GHz detections , 117 are reported here for the first time .
We draw attention to a number of ‘ special ’ sources , particularly those with emission at 12.2-GHz stronger than their 6.7-GHz counterpart and conclude that these unusual sources are not associated with a specific evolutionary stage .