postings in ncf.sigs.comnet.fig-4
total = 36
1998 [total = 28]
09 [total = 28]
21 = 0000000028
1996 [total = 8]
08 [total = 1]
08 = 1
07 [total = 1]
30 = 1
05 [total = 6]
08 = 4
02 = 2