l21f1.dat
First Record: 126:13:14:10::     Last Record: 126:19:04:15::

l22f1.dat
First Record: 126:13:58:32::     Last Record: 126:16:55:01::

l23f1.dat
First Record: 126:16:55:29::     Last Record: 126:20:53:54::

l25f1.dat
First Record: 127:00:58:44::     Last Record: 127:04:36:51::

l24f1.dat
First Record: 126:20:54:19::     Last Record: 126:00:57:08::

l26f1.dat
First Record: 127:04:37:51::     Last Record: 127:08:16:36::