Trend
constructor(difference2Weeks: Double = Double.NaN, statistic2Weeks: Double = Double.NaN, significance2Weeks: Double = Double.NaN, difference6Weeks: Double = Double.NaN, statistic6Weeks: Double = Double.NaN, significance6Weeks: Double = Double.NaN, difference1Year: Double = Double.NaN, statistic1Year: Double = Double.NaN, significance1Year: Double = Double.NaN)