If "var date = data[0][0]" returns values from column A how do I get values column C?

I am using a Google Script to pull Google Form data from Sheets to make an event in Google Calendar. The form populates two columns of data (timestamp and a number). I use a formula in column C to generate a title from the data in column B. No matter what I try I can only get the data in column B to show up in the calendar.

// function to retrieve data from Sheet and add to Calendar
function simpleSheetsToCalendar() {

  // get spreadsheet
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var sheet = ss.getSheetByName('Sheet1');

  // get the data from Google Sheet
  var data = sheet.getRange(sheet.getLastRow(),1,1,3).getValues();

  //  create variables
  var date = data[0][0];
  var title = data[0][3];

  // get calendar
  var masterCal = CalendarApp.getCalendarById('uknowme@gmail.com');

  // add to calendar
  masterCal.createAllDayEvent(title,date);  

}