github.com/vlifesystems/rulehunter@v0.0.0-20180501090014-673078aa4a83/experiment/fixtures/flow_three_columns.csv (about) 1 group,district,flow 2 a,northcal,16.5 3 a,midcal,19 4 a,southcal,5 5 6 b,northcal,19.25 7 b,midcal,10 8 b,southcal,7 9 10 c,northcal,20.73 11 c,midcal,82.4 12 c,southcal,1