Erroneous trashing of this directory resulted in the loss of the original modification time and date 

Science log says start of ob2 was 1105.
Laura's start time is about 11:10 from her data book.
11:22:49 is Laura's note's start time for file 5. so that should be considered the start time for these files.

End of card was at 12:06:35, track 47.