sigma
This is an implementation of the original Skyline 3sigma algorithms as a single custom algorithm. It has been extended to allow for the sigma value to be passed as a parameter.
See the docstrings - https://earthgecko-skyline.readthedocs.io/en/latest/skyline.custom_algorithms.html#module-custom_algorithms.macd
See the custom_algorithm source - https://github.com/earthgecko/skyline/blob/master/skyline/custom_algorithms/macd.py