For longer Phonic studies it can become difficult referring to question by index. Phonic includes data mapping features which allow you to provide labels to later reference your data.
Data mapping begins in the Phonic survey builder. Enter question settings and select 'Assign Data Label'. You'll be shown a field where you'll be able to enter a label which you'll later use to reference data collected in this question.
Once your survey is deployed and you've collected some responses, you'll have a few options when it comes to exporting. By selecting 'Use custom data labels as column headers you'll tell Phonic to include these labels in your data export to reference your data in a more reliable way.