public double[] GetSDs(double[] data)
{
int length = 5;
if (data.Length < length)
{
return null;
}
double[] result = new double[data.Length];
for (int i = length / 2; i < data.Length - length / 2; i++)
{
result[i] = GetSD(data.Skip(i - length / 2).Take(length).ToArray());
}
return Normalize(result);
}