data={{-70,12},{-60,4},{-50,22},{-35,15},{-30,22},{-20,19},{-15,30},{-10,24},{5,28},{15,25},{35,21},{42,26},{50,19},{60,18},{75,10},{80,12}};

Export["/Users/troyday/Desktop/Transfer/BB Chapter11/data.txt",data,"TSV"]