public void HeiseResidualTest()
{
//ExcelDataReaderSeries heii_qu = new ExcelDataReaderSeries(fn, "unregulation", "Date", "HEII_QU", "cfs");
var heii_qu = new TextSeries(Path.Combine(TestData.DataPath, "heii_qu.csv"));
heii_qu.Read();
var heii_resid = Math.WaterYearResidual(heii_qu, 7);
heii_resid.WriteToConsole();
var expected = new TextSeries(Path.Combine(TestData.DataPath, "heii_residual.csv"));
//var expected = new ExcelDataReaderSeries(fn, "unregulation", "Date", "HEII_RESID", "cfs");
expected.Read();
var diff = Math.Sum(heii_resid - expected);
Assert.IsTrue(System.Math.Abs(diff) < 0.01);
}