Processing logs for the EHTC campaign may be found in the file
2019.1.01812.V/group.uid___A001_X1528_X20b.ec_doeleman.ehtc-processing-logs.tgz
and original archiving file timestamps may be found in the file
2019.1.01812.V/group.uid___A001_X1528_X20b.ec_doeleman.ehtc-timestamps.tgz