

W056b1: M81 at C-band (21-Apr-1999)
;
| MADRD_TS | 111:12:57:32 | 111:15:27:12 | VLBA | 
| GBANK_TS | 111:18:52:05 | 111:22:03:42 | VLBA | 
| VLA | 111:13:00:00 | 111:22:00:00 | VLBA | 
| VLBA_BR | 111:13:00:00 | 111:22:00:00 | VLBA | 
| VLBA_HN | 111:13:00:00 | 111:22:00:00 | VLBA | 
| VLBA_NL | 111:13:00:00 | 111:22:00:00 | VLBA | 
| VLBA_OV | 111:13:00:00 | 111:22:00:00 | VLBA | 
| VLBA_SC | 111:15:15:00 | 111:22:00:00 | VLBA |