An experimentalist from Mars had been repeating Millikan's experiment.
Measuring the charges on a series of oil droplets in units of M.e.u.
(Martian electric units) he obtained the data in Table
1 before the Martian government cut the funding for his
experiment. What, in M.e.u. units, is the largest possible charge of
the electron consistent with these data and an experimental error of
at most 
%?
Table 1: Millikan values of charges on oil drops