[2016/counties/20160322__az__primary__president__pinal__precinct.csv](https://github.com/openelections/openelections-data-az/blob/1806df9c50f04e8da35ee0a1cf67e77902d18f01/2016/counties/20160322__az__primary__president__pinal__precinct.csv) has a header with 16 columns https://github.com/openelections/openelections-data-az/blob/1806df9c50f04e8da35ee0a1cf67e77902d18f01/2016/counties/20160322__az__primary__president__pinal__precinct.csv#L1 However, several lines have only 15 columns.