how many Abel 1st Day Cover Envelopes?

We did this per blackboard -- check com213a, uploaded now. So 

#                      mean  median  mode 
## after first five:   84.8   75     59 
## after ten numbers:  68.1   65     59 

ja s? sannelig, posterior mode unchanged, from 5 known numbers to 10 known numbers. The 90 percent credibility interval narrows down from [52, 151] to [55,90].