func getAvgTimeString(results: [Date]) -> String {
    var totalYears = [Double]()
    var totalMonths = [Double]()
    var totalDays = [Double]()
    var totalHours = [Double]()
    var totalMinutes = [Double]()

    let calendar = Calendar.current
    results.forEach {
        let year = Double(calendar.component(.year, from: $0))
        let month = Double(calendar.component(.month, from: $0))
        let day = Double(calendar.component(.day, from: $0))
        let hour = Double(calendar.component(.hour, from: $0))
        let minute = Double(calendar.component(.minute, from: $0))

        totalYears.append(year)
        totalMonths.append(month)
        totalDays.append(day)
        totalHours.append(hour)
        totalMinutes.append(minute)
    }

    let aveYear = Int(round(totalYears.average()))
    let avgMonth = Int(round(totalMonths.average()))
    let avgDay = Int(round(totalDays.average()))
    let avgHour = Int(round(totalHours.average()))
    let avgMinute = Int(round(totalMinutes.average()))

    let avgTimeString = String(format: "%04d/%02d/%02d %02d:%02d", aveYear, avgMonth, avgDay, avgHour, avgMinute)

    return avgTimeString
}