1           1979-07-30.32  Harris & Young (1983) 
2           1979-07-31.37  Harris & Young (1983) 
3           1979-08-01.25  Harris & Young (1983) 
4           1979-08-02.39  Harris & Young (1983) 
5           1979-08-03.32  Harris & Young (1983) 
6           1979-08-04.32  Harris & Young (1983) 
7  1997-08-12--2012-03-15  Lowell