00:30UT - Massive delay difference, clkoff was very high (order of e-01), mk5 was about 0.5s out of sync, but reported a sync error of 0. Counter and fmset didn't fix it so restarted the DBBC. That fixed the delay but then the field system crashed and had to be restarted. Missed scans 167-0031 to 167-0044 inclusive, corresponding to about 53
GB of data. (Ellen)