Fraction of inspired oxygen is different after python3 support commit.

[hrayrhar]

#23 introduces some differences in the created datasets. The difference is present only in the Fraction of inspired oxygen columns (about 50 stays affected). All the differences have the same from: before the commit the value was 0.00x and after the commit it is 0.x. The difference is probably caused by this change https://github.com/YerevaNN/mimic3-benchmarks/commit/d1345ff46bef8696d3a1d95d66cd57529c50a4ff#diff-1d490cd0d31a8ee697543d2ab47815e8L141. It seems that this fixes something, because 0.00x values for fraction of inspired oxygen are very strange, usually it is 0.x.

[turambar]

Should we close this?

[hrayrhar]

This is something we would like to fix in the future versions of the dataset. Right now we process fio2 of ~50 patients incorrectly.