Data for 'The potential for using smartphones as portable soil nutrient analyzers on suburban farms in central East China' paper GoliczKarolina SakrabaniRuben HallettStephen PanGenxing 2019 The data presented in the spreadsheet underpins 'The potential for using smartphones as portable soil nutrient analyzers on suburban farms in central East China' paper published in Scientific Reports. Each tab corresponds to particular figure and/or table presented in the paper.