1           2000-08-08.33  
 2           2000-08-09.35  
 3           2000-08-10.32  
 4           2000-08-21.35  
 5           2000-08-22.23  
 6           2000-09-28.26  
 7           2000-10-09.28  
 8           2000-10-17.25  
 9           2000-10-18.25  
10           2000-10-21.24  
11           2000-10-25.25  
12           2000-10-26.24  
13           2000-10-27.20  
14           2000-10-30.21  
15           2000-11-14.17  
16           2000-11-15.11  
17           2000-11-17.17  
18           2000-11-19.16  
19           2000-11-21.11  
20           2000-12-17.13  
21           1989-05-26.34  Wisniewski et al. (1997) 
22           1989-05-27.40  Wisniewski et al. (1997) 
23           1989-06-01.36  Wisniewski et al. (1997) 
24           1989-06-02.31  Wisniewski et al. (1997) 
25  1995-04-29--2010-08-31  Lowell