The Australia Telescope National Facility Mopra millimetre telescope has been used to search for 95.1-GHz class I methanol masers towards 62 6.6-GHz class II methanol masers. A total of 26 95.1-GHz masers were detected, 18 of these being new discoveries. Combining the results of this search with observations reported in the literature, a near complete sample of 66 6.6-GHz class II methanol masers has been searched in the 95.1-GHz transition, with detections towards 38 per cent (25 detections; not all of the sources studied in this paper qualify for the complete sample, and some of the sources in the sample were not observed in the present observations).

Cone search capability for table J/MNRAS/359/1498/table1 (Class II methanol maser sites detected in the 95.1-GHz class I transition (26 sources))

Cone search capability for table J/MNRAS/359/1498/table2 (Class II methanol maser sites not detected in the 95.1-GHz class I transition (33 sources))

Cone search capability for table J/MNRAS/359/1498/table3 (Comparison of peak flux density and velocity range of 6.6-GHz class II and 95.1-GHz class I methanol masers)