1           1981-09-07.40  Harris et al. (1992) 
 2           1981-09-21.35  Harris et al. (1992) 
 3           1981-09-25.17  Harris et al. (1992) 
 4           2014-10-06.22  
 5           2014-10-06.37  
 6           2014-10-12.29  
 7           2014-10-13.31  
 8           2014-10-14.18  
 9           2014-10-14.37  
10           2014-10-15.19  
11           2014-10-15.33  
12  1998-09-27--2012-03-21  Lowell