autocorrelation
statsmodels
statsmodels.tsa.stattools.acf
https://www.statsmodels.org/dev/generated/statsmodels.tsa.stattools.acf.html
statsmodels.graphics.tsaplots
.plot_acf
https://www.statsmodels.org/dev/generated/statsmodels.graphics.tsaplots.plot_acf.html
Examples
串本・浦神潮位差と日本南岸の黒潮緯度 (on google colaboratory )
https://colab.research.google.com/drive/1oFYvIrQ9TuFgjClZx3-5IZ7ayyqUT8on#scrollTo=K43gL2SmHvxO
statsmodels.graphics.tsaplots
.plot_pacf
patial autocorrelation
https://www.statsmodels.org/stable/generated/statsmodels.graphics.tsaplots.plot_pacf.html#statsmodels.graphics.tsaplots.plot_pacf
Sea also
correlation
Time Series analysis