#set   n_entries   mean        min         max         diff  
68     863         14.5057     7.0000      27.0000     22
70     1062        25.7237     22.0000     38.0000     16
71     976         25.4653     21.0000     40.0000     19
72     1238        13.0076     4.0000      30.1667     26.2
74     649         17.6772     6.0000      35.0000     29
#s75 goes screwy for a little while ... can't be real ... true range is 0->18
75     934         9.8712      0.0000      111.0000     
76     786         12.3096     4.0000      28.0345     24
83     1121        36.2146     28.8333     42.0000     13.2
84     1213        36.1697     32.3158     48.0000     15.68
86     1336        43.6913     36.0000     214.0000    178
#s86 true range:               36          53          7
87     1013        50.5035     48.0000     55.0000     7
88     1338        42.1065     34.8000     50.0000     15.2